6701
She was the first child of  Leopold III of Belgium  and sister of the late king Baudouin of Belgium and current king Albert II of Belgium She was born at the Royal Palace of Brussels as the oldest child and only daughter of Leopold III of Belgium and  Astrid of Sweden  .
 spouse: Leopold III of Belgium, Astrid of Sweden
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: Leopold III of Belgium, Astrid of Sweden