4551
 As a federal appellate judge , Roberts once questioned the constitutionality of some applications of the Endangered Species Act , and Arlen Specter , the Pennsylvania Republican and chairman of the Senate Judiciary Committee , has told Roberts that he intends to ask him about recent Supreme Court decisions narrowing Congress 's power to regulate interstate commerce . 
 location contains: Pennsylvania, Roberts
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:
 location contains: Pennsylvania, Roberts