With no explanation, label text_A→text_B with either "False" or "True".
text_A: Sam broke both his ankles and he's walking with crutches. But a month or so from now they should be unnecessary. The they is more likely to refer to crutches than his ankles because  the injury, like the other, might be treated with them.
text_B: In "Sam broke both his ankles and he's walking with crutches. But a month or so from now they should be unnecessary. ", The they is more likely to refer to crutches than his ankles because  the injury, like the other, might be treated with them.
True.