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Rockville , a five-square-mile city with about 57,000 residents , according to census figures for 2005 , is about 30 minutes from the center of Washington on the Washington Metro , the rapid transit system in the city and suburbs in Maryland and Virginia .
 location contains: Maryland, Rockville
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:  Maryland, Rockville 
Answer:
 location contains: Maryland, Rockville