a tree fell on him
a tree fall on him
det:art n v prep pro:obj
a tree fell on him ?
ɐ WORD_BOUNDARY t ɹ iː WORD_BOUNDARY f ɛ l WORD_BOUNDARY ɔ n WORD_BOUNDARY h ɪ m WORD_BOUNDARY
a WORD_BOUNDARY t r e e WORD_BOUNDARY f e l l WORD_BOUNDARY o n WORD_BOUNDARY h i m WORD_BOUNDARY