Cambridge riot of 1967
{'<entity_0>': 'Long Hot Summer of 1967', '<entity_1>': 'Cambridge riot of 1967'}
[['Cambridge riot of 1967', 'part of', 'Long Hot Summer of 1967']]
The <entity_1> was one of 159 race riots that swept cities in the United States during the "<entity_0>".
['ethnic riot', 'riot']