Question: Which English footballer, having played for St. Mary's Y.M.A., was born in Portsmouth?
Sentence (from "Ernie Nicholls"): Ernest Frederick "Ernie" Nicholls (21 November 1871 – February 1971) was an English footballer who played as a centre-forward for Southampton St. Mary's in the pre-professional era, being the club's most prolific goalscorer.
Relevant evidence: No