@prefix : .
:A :p1 :B .
:B :p2 :C .
:C :p3 :D .
:D :p4 :E .
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## .
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## .
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## .
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## 1) Query using forward paths (gets one result):
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## prefix t:
## select ?x where {?x t:vessel/t:roster/t:member t:person001}
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## 2) Query using 'full' reverse paths using '/^' (gets one result)
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## prefix t:
## select ?x where {t:person001^t:member/^t:roster/^t:vessel ?x}
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## 3) Query using shorthand reverse paths, '^' (gets zero results)
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## prefix t:
## select ?x where {t:person001^t:member^t:roster^t:vessel ?x}