6424
It was charged with ensuring the capital adequacy and financial safety and soundness of two government sponsored enterprises the Federal National Mortgage Association ( Fannie Mae ) and the  Federal Home Loan Mortgage Corporation  (  Freddie Mac  ) .
 alternate names: Federal Home Loan Mortgage Corporation, Freddie Mac
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  Federal Home Loan Mortgage Corporation, Freddie Mac 
Answer:
 alternate names: Federal Home Loan Mortgage Corporation, Freddie Mac