Add first draft of relex
diff --git a/tf-ner-poc/src/main/java/org/apache/opennlp/relex/EntityMention.java b/tf-ner-poc/src/main/java/org/apache/opennlp/relex/EntityMention.java
new file mode 100644
index 0000000..d773866
--- /dev/null
+++ b/tf-ner-poc/src/main/java/org/apache/opennlp/relex/EntityMention.java
@@ -0,0 +1,41 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.opennlp.relex;
+
+import java.util.Objects;
+
+import opennlp.tools.parser.Parse;
+
+public class EntityMention {
+
+  private final Parse parse;
+  private final int entityId;
+
+  public EntityMention(Parse parse, int entityId) {
+    this.parse = Objects.requireNonNull(parse);
+    this.entityId = entityId;
+  }
+
+  public Parse getParse() {
+    return parse;
+  }
+
+  public int getEntityId() {
+    return entityId;
+  }
+}
diff --git a/tf-ner-poc/src/main/java/org/apache/opennlp/relex/Relation.java b/tf-ner-poc/src/main/java/org/apache/opennlp/relex/Relation.java
new file mode 100644
index 0000000..c9b1f55
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+++ b/tf-ner-poc/src/main/java/org/apache/opennlp/relex/Relation.java
@@ -0,0 +1,31 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.opennlp.relex;
+
+public class Relation {
+
+  private final int subject;
+  private final String predicate;
+  private final int object;
+
+  public Relation(int subject, String predicate, int object) {
+    this.subject = subject;
+    this.predicate = predicate;
+    this.object = object;
+  }
+}
diff --git a/tf-ner-poc/src/main/java/org/apache/opennlp/relex/RelationExtractor.java b/tf-ner-poc/src/main/java/org/apache/opennlp/relex/RelationExtractor.java
new file mode 100644
index 0000000..4a55576
--- /dev/null
+++ b/tf-ner-poc/src/main/java/org/apache/opennlp/relex/RelationExtractor.java
@@ -0,0 +1,29 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.opennlp.relex;
+
+public class RelationExtractor {
+
+  // TODO: This type of interface would limit the extractor to look
+  //       only at sentences that contains entities.
+  //       This is borrowed from the old coref component.
+
+  public Relation[] extract(EntityMention[] mentions) {
+    return null;
+  }
+}
diff --git a/tf-ner-poc/src/main/python/relex/relex.py b/tf-ner-poc/src/main/python/relex/relex.py
new file mode 100644
index 0000000..62ca965
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+++ b/tf-ner-poc/src/main/python/relex/relex.py
@@ -0,0 +1,35 @@
+#
+#  Licensed to the Apache Software Foundation (ASF) under one
+#  or more contributor license agreements.  See the NOTICE file
+#  distributed with this work for additional information
+#  regarding copyright ownership.  The ASF licenses this file
+#  to you under the Apache License, Version 2.0 (the
+#  "License"); you may not use this file except in compliance
+#  with the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing,
+#  software distributed under the License is distributed on an
+#  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+#  KIND, either express or implied.  See the License for the
+#  specific language governing permissions and limitations
+#  under the License.
+#
+
+import tensorflow as tf
+
+
+# load_date
+# which format ??? we could write some java tool to extract data from brat corpus
+# and export it into a format that can be used easier to train the tool
+
+
+def main():
+    pass
+
+def create_graph():
+    pass
+
+if __name__ == "__main__":
+    main()