With no explanation, label text_A→text_B with either "not-entailed" or "entailed".
text_A: `` Half of the studies provide strong evidence of a causal link between the biological change and climate change , `` said Camille Parmesan , a University of Texas - Austin biologist and one of the world 's leading experts on this issue .
text_B: The providing did not happen
not-entailed.