28240
 The Campbell story dates to the days before World War II when Sir Malcolm Campbell , Donald Campbell 's father , achieved great fame by setting land and water speed records in Britain and America . 
 children: Malcolm Campbell, Donald Campbell
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: nationality, country capital, place of death, children, location contains, place of birth, place lived, administrative division of country, country of administrative divisions, company, neighborhood of, company founders 
Text: {0} 
Answer:
 children: Malcolm Campbell, Donald Campbell