@prefix : <http://example/> .


:A :p1 :B .
:B :p2 :C .
:C :p3 :D .
:D :p4 :E .

## <http://test.com/cg#incident001><http://test.com/cg#vessel><http://test.com/cg#vessel001> 
## .
## <http://test.com/cg#vessel001><http://test.com/cg#roster><http://test.com/cg#roster001> 
## .
## <http://test.com/cg#roster001><http://test.com/cg#member><http://test.com/cg#person001> 
## .
## 
## 1) Query using forward paths (gets one result):
## 
## prefix t: <http://test.com/cg#>
## select ?x where {?x t:vessel/t:roster/t:member t:person001}
## 
## 2) Query using 'full' reverse paths using '/^' (gets one result)
## 
## prefix t: <http://test.com/cg#>
## select ?x where {t:person001^t:member/^t:roster/^t:vessel ?x}
## 
## 3) Query using shorthand reverse paths, '^' (gets zero results)
## 
## prefix t: <http://test.com/cg#>
## select ?x where {t:person001^t:member^t:roster^t:vessel ?x}