19786
 Katla , one of Iceland 's most notorious volcanoes , has erupted five times since 1721 , at intervals ranging from 34 to 78 years . 
 location contains: Iceland, Katla
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  Iceland, Katla 
Answer:
 location contains: Iceland, Katla