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 had to knock several times.
Example Output: He

Example Input: When he opened the door it seemed to his fancy that the wax tapers burned but dimly amid the shadows of the great room, and that the pictured faces hanging on the walls looked white and gazed as if aghast.
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