Sentence 1: Almost all Basal - Ceratopsians except `` Yinlong '' and perhaps the Chaoyangsauridae were known .
Sentence 2: Psittacosaurids were known to almost all basal ceratopsians except `` Yinlong '' and perhaps the Chaoyangsauridae .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?