This is the subclass of ContentBearingPhysical which are language-related. Note that this Class encompasses both Language and the the elements of Languages, e.g. Words.
||公式||A syntactically well-formed formula in the SUO-KIF knowledge representation language.|
| ||订购||A Sentence that expresses an order for something or that something be done.|
| ||题||An interrogative Sentence, a Sentence that poses a question.|
| ||请求||A Sentence that expresses a request for something or that something be done.|
| ||声明||A Sentence that is stated to be true.|
| ||假想||A Sentence that is assumed to be true, possibly just for the sake of argument.|