In this task, You are given an open-domain question that can be answered based on factual information. Your task is to provide \*short\* answer (in a few words only) for the given question. The short answer can be one or more entities or it can also be boolean \*yes\* or \*no\*.

Input: Consider Input: what are the ghost's name in pacman

Output: Clyde


Input: Consider Input: when did harry potter and the philosopher's stone movie come out

Output: 16 November 2001


Input: Consider Input: when did oxygen start to accumulate in the atmosphere


Output: around 2.45 billion years ago