. "a stop sign"@en . "a serial number such as \"12324X\""@en . . . "a written proper name such as \"OBI\""@en . . . . "PERSON: Jonathan Rees"@en . "based on Oxford English Dictionary"@en . . . . "symbol"@en . "20091104, MC: this needs work and will most probably change"@en . . "2014-03-31: We would like to have a deeper analysis of 'mark' and 'sign' in the future (see https://github.com/information-artifact-ontology/IAO/issues/154)."@en . "PERSON: James A. Overton"@en . "symbol"@en . "An information content entity that is a mark(s) or character(s) used as a conventional representation of another entity."@en .