5016
It started as a " precario " in the mid eighties , that is a piece of land that was invaded by homeless people who built makeshift houses until the land was granted to them by the government so that they became the owners of the properties .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None