Question: Are David Coverdale and Burton C. Bell both founders or co-founders of a band?

Related documents: [0]  [DOC] Burton Christopher Bell (born February 19, 1969) is an American musician and vocalist. Bell is best known as co-founder and frontman of the metal band Fear Factory. His singing style mixes clean and shouted vocals with death growls. [END] 
[1]  [DOC] David Coverdale (born 22 September 1951) is an English rock singer best known for his work with Whitesnake, a hard rock band he founded in 1978. Before Whitesnake, Coverdale was the lead singer of Deep Purple from 1973 to 1976, after which he established his solo career. A collaboration with Jimmy Page resulted in a 1993 album that was a commercial and critical success. In 2016, Coverdale was inducted into the Rock and Roll Hall of Fame as a member of Deep Purple, giving one of the band's induction speeches. [END]  
Answer: yes
yes