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4fc653268460823afc0c347a8745c496976fe48b
/
.
/
jena-sdb
/
testing
/
Algebra
/
two-nested-opt-alt.rq
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PREFIX
:
<
http
:
//example/>
## The nested optional example, rewritten to a form that is the same
## for the SPARQL algebra and the declarative semantics.
SELECT
*
{
:
x1
:
p
?
v
.
OPTIONAL
{
:
x3
:
q
?
w
}
OPTIONAL
{
:
x3
:
q
?
w
.
:
x2
:
p
?
v
}
}