With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: The Cape Verde islands are a very degradated area. Also, most islands do not always get a monsoon. In fact, it is surprising that some atmospheric precipitation of islands are not limited in tropical rain.
text_B: Is the source of tropical rain on the islands surprising?
DON'T KNOW.