Question:  Poème élégiaque in D minor was dedicated to a composer whose best-known works are "Pavane", "Après un rêve" and what? 
Sentence (from "Gabriel Fauré"): Among his best-known works are his "Pavane", Requiem, nocturnes for piano and the songs "Après un rêve" and "Clair de lune".
Relevant evidence: Yes