21833
It was built between Tarrytown , in Westchester County , and Nyack , in Rockland County , at what is nearly the widest part of the Hudson River , in the 1950 's , when Rockland was still largely rural and just beginning to attract New York City commuters .
 location contains: Westchester County, Tarrytown; location contains: Rockland County, Nyack
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "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} 
Answer:
 location contains: Westchester County, Tarrytown; location contains: Rockland County, Nyack