Conversation so far:
What was Ringo Starr a part of?
Ringo Starr was a part of The Beatles.
What was an honor given to Ringo Starr and The Beatles?
In August 1966, the Beatles released Revolver, their seventh UK LP. It included the song Yellow Submarine, their only British number-one single with Ringo Starr as the lead singer.

Question: What award was their next achievment?
Self-contained rewrite: What award was Ringo Starr and The Beatles' next achievment?