Hash Bash
{'<entity_0>': 'Ann Arbor', '<entity_1>': '1972', '<entity_2>': 'annual event', '<entity_3>': 'Hash Bash'}
[['Hash Bash', 'instance of', 'annual event'], ['Hash Bash', 'location', 'Ann Arbor'], ['Hash Bash', 'inception', '1972'], ['Hash Bash', 'start time', '1972']]
<entity_3> is an <entity_2> held in <entity_0>, originally held every April 1st, but now on the first Saturday of April at noon on the University of Michigan Diag. The first <entity_3> was held on Saturday, <entity_1> in response to the March 9th <entity_1> decision by Michigan Supreme Court declaring unconstitutional the law used to convict cultural activist John Sinclair for possession of two marijuana joints. <entity_3> participants did not encounter significant police interference until the seventh <entity_2>, in 1978, when local police booked, cited, photographed, and released those participants alleged to be using illegal substances. By 1985 the <entity_3> had a 0 attendance rate but quickly arose to become a major protest in <entity_0>.
['annual event']