question: Who were two visitors to Chopin while in Nohant ?
answer: Delacroix and the mezzo-soprano Pauline Viardot
turker_answer: Delacroix and the mezzo-soprano Pauline Viardot visited Chopin while in Nohant .
rule-based: Delacroix and the mezzo-soprano Pauline Viardot were two visitors to Chopin while in Nohant .