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: where are the world athletic championships being held

Output: London


Input: Consider Input: what popular food is thought to have originated in naples italy

Output: pizza


Input: Consider Input: which arc is a line of volcanoes on an oceanic plate


Output: continental volcanic arcs