○○○third person⪢⪢
He explains that English does not have a third person singular pronoun that does not identify as male or female.
Zimmer says that more and more "they" is being used to replace the traditional phrase, "he or she".
http://qindex.info/i.php?x=9415
○○○transgender⪢⪢
For example, "they" is used for people who identify as transgender. When former Olympic athelete Bruce Jenner took a female identity last year, he changed his name to Caitlyn Jenner.
http://qindex.info/i.php?x=9416