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).

Input: Consider Input: I turned back toward the boat.

Output: I


Input: Consider Input: Holmes turned to his desk and, unlocking it, drew out a small case-book, which he consulted.

Output: Holmes


Input: Consider Input:  The gymnast strikes his leg accidentally on the bars bringing him to a stop.


Output: leg