With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Batman has martial arts classes.
text_B: Bobby Kimmel -LRB- born September 1 , 1940 -RRB- is an American musician and songwriter who currently performs with the acoustic folk group , I Hear Voices .. He has been recording and performing in concert for over 50 years and was a founding member of the Stone Poneys , along with Linda Ronstadt and the late Kenny Edwards .. Stone Poneys. Stone Poneys. Linda Ronstadt. Linda Ronstadt. Kenny Edwards. Kenny Edwards. Bobby Kimmel moved to Tucson as a child for his asthmatic condition .. His father was a studio musician in New York City , and become the principal double bass player in the Tucson Symphony Orchestra .. He also owned and operated a retail music shop near the University .. Bobby 's early musical influence was jazz , especially `` West Coast '' jazz .. He also listened to the `` harder '' East Coast Jazz .. His passion for jazz continued all throughout his high school years , and it was not until he discovered the guitar -LRB- at age 17 -RRB- that his musical direction changed .. He became aware of the folk music greats such as Doc Watson , Lightnin Hopkins , Merle Travis , Mississippi John Hurt , as well as contemporaries like Dick Rosmini , Steve Mann and Ry Cooder .. Doc Watson. Doc Watson. Lightnin Hopkins. Lightnin Hopkins. Merle Travis. Merle Travis. Mississippi John Hurt. Mississippi John Hurt. Dick Rosmini. Dick Rosmini. Steve Mann. Steve Mann. Ry Cooder. Ry Cooder. Phonorecords from his father 's music store at this time contributed invaluably to his musical education .. At that point , Bobby fully turned his attention toward folk music .. He began playing both bass and guitar in the folk music clubs around Tucson in the early 60s .. He started performing with his friend , Linda Ronstadt .. Linda Ronstadt. Linda Ronstadt. During this period Bobby played bass in a folk group with Linda and her older brother and sister Peter and Suzie .
not_related.