original: in 1972 , arsonists set the bunker on fire .
simplifications: the arsonists set the bunker on fire in 1972 . in 1972 , firestarters set the bunker on fire . in 1972 , arsonists set the bunker on hire . in 1972 , arsonists set the bunker on fire . in 1972 , criminals -lrb- who set things on fire -rrb- set the bunker on fire . arsonists set the bunker on fire in 1972 . in 1972 , arsonists set the bunker on fire . in 1972 , people set the shelter on fire .