Given the task definition and input, reply with output. 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).

There was just room for me to keep his arm in mine; with the other he hauled on the banisters; and so we mounted, step by step, a panting pause on each, and a pitched battle for breath on the half-landing.
his