20283
 The Institute for Science and International Security , which monitors Iran , said Thursday that '' Iran still needs to repair and operate its first 164-machine test cascade at the Natanz pilot plant , '' and that it has to overcome considerable hurdles . '' 
 location contains: Iran, Natanz
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: Iran, Natanz