With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ann Romney has yet to be married.
text_B: Racquetball is a racquet sport played with a hollow rubber ball in an indoor or outdoor court .. racquet sport. racquet sport. rubber. rubber. ball. ball. Joseph Sobek is credited with inventing the modern sport of racquetball in 1950 , adding a stringed racquet to paddleball in order to increase velocity and control .. Joseph Sobek. Joseph Sobek. paddleball. Four wall paddleball. Unlike most racquet sports , such as tennis and badminton , there is no net to hit the ball over , and , unlike squash , no tin -LRB- out of bounds area at the bottom of front wall -RRB- to hit the ball above .. ball. ball. racquet sports. List of racquet sports. tennis. tennis. badminton. badminton. squash. squash ( sport ). Also , the court 's walls , floor , and ceiling are legal playing surfaces , with the exception of court-specific designated hinders being out-of-bounds .. Racquetball is very similar to 40 × 20 American handball , which is played in many countries .. American handball. American handball. It is also very similar to the British sport Squash 57 , which was called racketball before 2016 -LRB- see below for a comparison -RRB- .. Squash. Squash ( sport ). below. #Comparison to racketball
not_related.