With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: The leaching of highly water soluble tannins from decaying vegetation and leaves along a stream may produce what is known as a blackwater river. Water flowing out of bogs has a characteristic brown color from dissolved peat tannins. Tannins, also known as humic acid, can be found in well water, yet despite giving it a bitter taste and bad smell, they do not raise any safety concerns.
text_B: Given what we know about tannins in well water, should we also be concerned about high levels of tannins that can be found in red wine, after leaching into the undiluted juice from grape skins?
NO.