712
In 1485 the Lancastrian  Henry  Tudor defeated the Yorkist king Richard III on Bosworth Field and married  Elizabeth of York  daughter of Edward IV and sister to the Princes in the Tower to unite the houses .
 spouse: Henry, Elizabeth of York
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 spouse: Henry, Elizabeth of York