57 Plural marking generally optional : for nouns with human referents

A - feature is pervasive or obligatory9
B - feature is neither pervasive nor extremely rare12
C - feature exists, but is extremely rare11
D - attested absence of feature37
X - feature is not applicable (given the structural make-up of the variety/P/C)7
? - no information on feature is available1

Feature area:
Noun phrase
Typical example:
My sister-Ø are pretty girl-Ø.
Example source:
Variety World Region Type Value
Id Primary text Variety Variety Type