With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: In Grey 's Anatomy , Lexie tells Mark that Callie is pregnant .
text_B: Another central story-line in the series is Lexie and Mark , after Lexie decides that she 's going to give Mark a second chance , she tells him that Callie is pregnant , and she effectively ends their relationship , and starts one with Jackson .
SUPPORTS.