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: And behind and amidst them there rode three men with peaked caps and red coats, whom I understood to be the hunters.
Example Output: men

Example Input: "Now, Mr Shushions," Hilda persuaded him in a voice exquisitely mild, and with a lovely gesture she bent over him.
Example Output: she

Example Input: A boy surfs in a big wave.
Example Output:
boy