12920
The discography of  Billie Piper  ( as known as  Billie  ) an English pop music singer consists of two studio albums two compilation albums and nine singles .
 alternate names: Billie Piper, Billie
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:
 alternate names: Billie Piper, Billie