3066
The cattle yards were closed in 1868 or " about 1871 " , but the cattle trade continued ; " until the 1920s , cows were unloaded here and driven down Massachusetts Avenue , through Harvard Square , and across the river to the Brighton Abattoir " .
 location: Massachusetts
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Massachusetts