Sentence:  I was born in the <WSD>year</WSD> 1950. 
Meaning of the word marked with <WSD> tags:  A period between set dates that mark a year, from January 1 to December 31 by the Gregorian calendar, from Tishiri 1 to Elul 29 by the Jewish calendar, and from Muharram 1 to Dhu al-Hijjah 29 or 30 by the Islamic calendar.