TASK DEFINITION: In this task, you are given a sentence which contains a motion and your task is to identify the physical entities involved in the motion. The input sentence can have more than one entity and also there is at least one entity that takes part in physical motion. There are two types of entities which are animate (beings that are alive) and inanimate entities (beings that are not alive).
PROBLEM: Driving a peg, with great nicety, into the ground, at the precise spot where the beetle fell, my friend now produced from his pocket a tape-measure.

SOLUTION: friend

PROBLEM:  The people crowd around the bull waving sticks and follow the bull around as he gets angry.

SOLUTION: people

PROBLEM: Maso is gone to bed," he said, in a grave, quiet tone, interposing to close the door for her.

SOLUTION:
Maso