Conversation so far:
Where was Sly and the Family Stone formed?
The band, Sly and the Family Stone formed in San Francisco.
How many band members were there in Sly and the Family Stone?
The band, Sly and the Family Stone's core line-up was 7 members.

Question: Are there any other interesting aspects about this article?
Self-contained rewrite: Are there any other interesting aspects about this Sly and the Family Stone article besides their formation and core members?