9571
 Mr. Valdez ' illegal career took off after the arrest in March 2003 of Osiel Cardenas , who controlled the drug trade in Nuevo Laredo , the busiest port along the 2,000-mile border between the United States and Mexico . 
 location contains: Mexico, Nuevo Laredo
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:  Mexico, Nuevo Laredo 
Answer:
 location contains: Mexico, Nuevo Laredo