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: "O, yes, I can," retorted Mrs. Porter, closing one eye and ministering to it hastily with the corner of her apron.
Example Output: Porter

Example Input: Certainly there was nothing directly above him that would serve, and he passed his right hand to one side.
Example Output: he

Example Input: A group of men sit around a bar flirting with a bartender behind the bar.
Example Output:
men