42636
The couple are among the hundreds of commercial fishermen in California and Oregon who have been forced to sit out much of the salmon season because of chronic problems with the fish on the Klamath River , one of the country 's most politicized and litigated waterways , about 270 miles north of here .
 location contains: Oregon, Klamath River; location contains: California, Klamath River
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: ethnicity, place lived, geographic distribution, company industry, country of administrative divisions, administrative division of country, location contains, person of company, profession, ethnicity of people, company shareholder among major shareholders, sports team of location, religion, neighborhood of, company major shareholders, place of death, nationality, children, company founders, company founded place, country of capital, company advisors, sports team location of teams, place of birth 
Text: {0} 
 Entity Pairs:  Oregon, Klamath River; California, Klamath River 
Answer:
 location contains: Oregon, Klamath River; location contains: California, Klamath River