4726
As required by the constitution  Muhammad Mian Soomro  ( in his position as Chairman of the Senate of  Pakistan  ) automatically became acting President on 18 August 2008 upon the resignation of Musharraf .
 origin: Muhammad Mian Soomro, Pakistan
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:
 origin: Muhammad Mian Soomro, Pakistan