The artificial language Lojban[1] expresses everything as predicates. For example, the word "benji" expresses the relationship "send", and it would have paramet

The artificial language Lojban[1] expresses everything as predicates. For example, the word "benji" expresses the relationship "send", and it would have parameter slots around it for the sender (x1), the thing being sent(x2), the receiver (x3), the origin (x4) and the medium (x5). Lojban uses the word "zo'e" in the same way as jawn, to indicate an unspecified parameter in a predicate. This way you can skip over a parameter or emphasize it without specifying it. (Usually this isn't needed because x1 and x2 are most used and come right before and after the relationship word. Also, there are ways to reorder the parameters.) There is also "co'e", which is the word for an unspecified relationship. [1] https://en.wikipedia.org/wiki/Lojban https://en.wikipedia.org/wiki/Lojban