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).

Example Input:  He removes his gloves and gets to his knees and back up as he tries to pull the line out of the hole repeatedly.
Example Output: He

Example Input:  They stand in front of one drum and perform a routine using only drums.
Example Output: They

Example Input:  The ball is deflected by the net and the partner loses the round.
Example Output:
ball