18903
 Perot Systems , based in Plano , Tex. , had sales of $ 2 billion last year and employs 20,000 people in more than 20 countries , 6,000 of them in India alone . 
 Plano, Perot Systems
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; 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:
 Plano, Perot Systems