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 was on his knees now, and his exploration had carried him as far as the table; another moment and he was grovelling under it, still at his search, which with each fresh disappointment grow more feverish.
Example Output: He

Example Input:  After, the man stands to practice kicks, then the man lye down and and hug the child who continues practicing kick box.
Example Output: man

Example Input:  The man in purple falls and is struck in the face with his skateboard.
Example Output:
man