question: When was Swansea City 's home match played against Wigan Athletic ?
answer: Swansea City 's home match at the Liberty Stadium against Wigan Athletic on 20 August 2011 .
turker_answer: Swansea City 's home match played against Wigan Athletic was on 20 August 2011 .
rule-based: Swansea City 's home match played against Wigan Athletic was in Swansea City 's home match at the Liberty Stadium against Wigan Athletic on 20 August 2011 .