Question: When was English football manager, who managed West Ham United from May 2011 to May 2015, known as "Big Sam" born?
Sentence (from "Sam Allardyce"): Samuel Allardyce ( ; born 19 October 1954), known as "Big Sam", is an English football manager and former professional player, who most recently managed Crystal Palace from December 2016 to May 2017.
Relevant evidence: Yes