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: Then one cold night while Anna sewed by the lamp inside the little house, Rudolph and Herman walked in the frozen garden, Herman with his pipe, Rudolph with the cheap cigarets he used incessantly.

Output: Anna


Input: Consider Input: As soon as that was out of his way he began moving backward and forward over the hole he had cut in the web, just as if he were a weaver's shuttle, and in about ten minutes it was all covered with gauzy lacework finer than ever was worn by a queen.

Output: he


Input: Consider Input: Four men were produced at once who had seen a dark mass of boats moving in the light of the dawn.


Output: men