Speculator Mine disaster
{'<entity_0>': 'Speculator Mine disaster', '<entity_1>': '08 June 1917'}
[['Speculator Mine disaster', 'point in time', '08 June 1917']]
The <entity_0> of <entity_1>, occurred as a result of a fire in a copper mine, and was the most deadly event in underground hard rock mining in United States history.
['mining accident']