Fake prehistoric rock art of a caveman with a shopping trolley has been hung on the walls of the British Museum.
The museum curator knows the art is there.
( z1 know :ARG0 ( z2 person :ARG0-of ( z3 have-org-role :ARG1 ( z4 museum ) :ARG2 ( z5 curator ) ) ) :ARG1 ( z6 art :location z4 ) )