core + attic (Attic Area): these terms have been either depricated from the core or extentions, or removed from pending as not accepted into the full vocabulary.

gender

Canonical URL: http://schema.org/gender

Thing > Property > gender

Gender of the person. While http://schema.org/Male and http://schema.org/Female may be used, text strings are also acceptable for people who do not identify as a binary gender.

Usage: Between 1000 and 10,000 domains
Values expected to be one of these types
GenderType
Text
Used on these types
Person

Schema Version 3.2