With no explanation, label text_A→text_B with either "False" or "True".
text_A: I can't cut that tree down with that axe; it is too thick. The it is more likely to refer to that tree than that axe because  of its size, but I'm not 100% sure.
text_B: In "I can't cut that tree down with that axe; it is too thick. ", The it is more likely to refer to that tree than that axe because  of its size, but I'm not 100% sure.
True.