@prefix log: <http://www.w3.org/2000/10/swap/log#>.
@prefix : <http://example.org/ns#>.

<<:n1 :p1 :n2>> :category :C1.
<<:n1 a :C1>> :category :C1.
<<:n1 :p2 :n3>> :category :C1.
<<:n1 :p3 :n4>> :category :C1.
<<:n3 a :C2>> :category :C2.
<<:n3 :p2 :n1>> :category :C2.
<<:n3 :p4 :n5>> :category :C2.
<<:n3 :p5 :n6>> :category :C2.
<<:n6 a :C3>> :category :C3.
<<:n6 :p6 :n7>> :category :C3.
<<:n2 :p2 :n3>> :category :C1.

