28636
 An expedition led by Richard E. Leakey , the Kenyan paleoanthropologist , excavated the two fossil specimens 38 years ago along the Omo River in southern Ethiopia , near the town of Kibish . 
 location contains: Ethiopia, Omo River
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:  Ethiopia, Omo River 
Answer:
 location contains: Ethiopia, Omo River