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 continues to excel in doing his moves steadily on the horse bar.
Example Output: He

Example Input:  Snow flying in the air lands on the face of the man, then the man continue snowboarding.
Example Output: man

Example Input: A group of men in masks are gathered around targets.
Example Output:
group of men