Question: Alex Smith played for what  professional association football club based in Southend-on-Sea, Essex, England
Sentence (from "Alex Smith (footballer, born 1947)"): Alexander "Alex" Smith (born 11 May 1947) is a former professional footballer, who played for Ossett Albion, Bradford City, Huddersfield Town, Southend United, Colchester United and Halifax Town.
Relevant evidence: Yes