On grammatical class:
- start grammatical quotation; quoted text should be grammatical on its own.
- start grammatical name quotation; the quoted text is an identifier and must be grammatical on its own.
- x1=v1=k1 is a word/quotation crossing other words/quotations, meaning/defined by x2=v2, located at x3=k3
- unevaluated mekso as name.
- x1 is Aries [astronomical constellation/astrological sign].