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: We had reached the end of the narrow passage, and emerged into the square of brick and grass that lay behind the house.
Example Output: We

Example Input:  During that time, one of the men get shot in the head and he collapses and falls down.
Example Output: men

Example Input: The man produces a lot of black dust while making the repairs to the bicycle, and he eventually leaves the room, comes back and then leaves again as one cat approaches the area the man was working from.
Example Output:
man