Question: The Symphony No. 6 in B minor was first performed in Moscow on 4/16 December, conducted by  Russian pianist, teacher, conductor and composer also known as who?
Sentence (from "Vasily Safonov"): Vasily Ilyich Safonov (Russian: Васи́лий Ильи́ч Сафо́нов, "Vasi'lij Ilji'č Safo'nov" ; 6 February 185227 February 1918), also known as Wassily Safonoff, was a Russian pianist, teacher, conductor and composer.
Relevant evidence: Yes