First, they used chainsaws to cut down and remove young trees amid gravestones.
(they; used; chainsaws; to cut down and remove young trees amid gravestones; T:First) Context(they used,List([7, 16))):(they; used chainsaws to cut down; ) Context(they used,List([7, 16))):(they; used chainsaws to remove; young trees; L:amid gravestones)
they used,List([7, 16)) they used,List([7, 16))
they they they
used used chainsaws to cut down used chainsaws to remove
chainsaws to cut down and remove young trees amid gravestones T:First
young trees L:amid gravestones