Question: Simon & Garfunkel were an American folk rock duo consisting of singer-songwriter Paul Simon and singer Art Garfunkel, their biggest hits—including "Bridge over Troubled Water" is a song by American music duo Simon & Garfunkel, produced  by the duo and who?
Sentence (from "Simon &amp; Garfunkel"): Simon & Garfunkel were an American folk rock duo consisting of singer-songwriter Paul Simon and singer Art Garfunkel.
Relevant evidence: No