This is a paraphrasing task. In this task, you're given a sentence and your task is to generate another sentence which express same meaning as the input using different words.
Q: the great cat nearly tripped over a pile of branches and twigs that had been set by whom , guenhwyvar did not know just outside the doorway .
A:
the big cat nearly tripped over a pile of branches that someone , guenhwyvar did n't know , left him right in front of the cave .