TASK DEFINITION: In this task, you're given an ambiguous question (which can be answered in more than one way). Your task is to provide one question which clarifies the input question and it has one unique answer, and also provide an answer to the generated question. Generated question and answer should be separated with a new line.
PROBLEM: What do brackets in an chemical equation mean?

SOLUTION: What do square brackets in an chemical equation mean for molecules? 
 used around the chemical molecular formula

PROBLEM: When was last time england won world cup?

SOLUTION: What was last the world cup england won? 
 1966 FIFA World Cup

PROBLEM: When did the washington nationals become a baseball team?

SOLUTION:
When was the official announcement that the Washington Nationals would be a baseball team? 
 September 29, 2004