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: The inventor turned to face the younger man in the doorway.
Example Output: inventor

Example Input: The boat will drift into the smoke and out again.
Example Output:
boat