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\*.

what popular food is thought to have originated in naples italy
pizza

average life expectancy of a man in england
79.4

who sang the power of love before celine dion

Jennifer Rush