Definition: In this task, you are given a statement spoken by a politician in natural language. Your task is to generate the subject of the discussion for the given statement. The subject generated is not necessarily a part of the given input. Your answer should contain one or more words.
Input: From 2013-2015, the richest 14 Americans increased their net wealth by more than $157 billion, yet the Republican budget would not require these Americans to contribute one penny to deficit reduction.

wealth