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: At this moment, the guard, surprised by the sound of voices, opened the door of his little cabin.

SOLUTION: guard

PROBLEM: He threw his leg over the fence.

SOLUTION: He

PROBLEM:  The camera pans all around the player and shows him playing the complete song.

SOLUTION:
player