Sentence 1: Electroencephalographic changes are mediated by sugar endorphins, but the mechanism for this remains unknown, it does not seem to be reduced. Sentence 2: Electroencephalographic changes are reduced by sugar, but the mechanism for this remains unknown; it does not seem to be endorphin mediated.<unk> Sentence 2: Electroencephalographic changes are reduced by sugar, but the mechanism for this remains unknown; it does not seem to be endorphin mediated. Question: Do sentence 1 and sentence 2 express the same meaning? - Yes or No? - Yes or No?
<unk> <unk>