Once on the train (according to what the channel said was a leaked police statement, aired Tuesday night) a police officer pinned de Menezes down when another officer shot him.
On a train, a man was pinned down and shot to death
We don't know if he was killed or not by the shot, only that he was shot on the train
( z1 and :op ( z2 pin-down :ARG1 ( z3 man ) ) :op ( z4 shoot :ARG1 z3 :ARG0-of ( z5 cause :ARG1 ( z6 die :ARG1 z3 ) ) ) :location ( z7 train ) )