With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: Four seasons of Arrow are available on DVD and Blu-ray in regions 1 , 2 , and 4 .
text_B: The first four seasons are available on DVD and Blu-ray in regions 1 , 2 and 4 ; a soundtrack was also released for the first two seasons .
SUPPORTS.