Question: What is the name of the bassist, one of the founding members of the Seattle based American Rock band Soundgarden, who left the band in 1989 and started an independent rock band Truly together?
Sentence (from "Hiro Yamamoto"): Hiro Yamamoto (山本 紘 , Yamamoto Hiro , born April 13, 1961) is an American bassist who was a founding member of grunge band Soundgarden, along with Kim Thayil and Chris Cornell in 1984.
Relevant evidence: Yes