Oppau explosion
{'<entity_0>': '21 September 1921', '<entity_1>': 'Oppau explosion', '<entity_2>': 'Ludwigshafen-Oppau', '<entity_3>': 'explosion', '<entity_4>': 'Oppau'}
[['Oppau explosion', 'has cause', 'explosion'], ['Oppau explosion', 'location', 'Oppau'], ['Oppau explosion', 'instance of', 'explosion'], ['Oppau explosion', 'point in time', '21 September 1921'], ['Oppau explosion', 'start time', '21 September 1921'], ['Oppau explosion', 'end time', '21 September 1921'], ['Oppau explosion', 'location', 'Ludwigshafen-Oppau']]
The <entity_1> occurred on <entity_0>, when approximately 4,500 tonnes of a mixture of ammonium sulfate and ammonium nitrate fertilizer stored in a tower silo exploded at a BASF plant in <entity_4>, now part of <entity_2>, Germany, killing 500–600 people and injuring about 2,000 more. Indeed, nothing extraordinary had happened during an estimated 20,000 firings, until the fateful <entity_3> on <entity_0>.
['disaster', 'explosion', 'industrial disaster']