Gibraltar sovereignty referendum
{'<entity_0>': 'Gibraltar sovereignty referendum', '<entity_1>': '1967', '<entity_2>': 'referendum', '<entity_3>': 'Gibraltar'}
[['Gibraltar sovereignty referendum', 'point in time', '1967'], ['Gibraltar sovereignty referendum', 'applies to jurisdiction', 'Gibraltar'], ['Gibraltar sovereignty referendum', 'instance of', 'referendum'], ['Gibraltar sovereignty referendum', 'country', 'Gibraltar'], ['Gibraltar sovereignty referendum', 'location', 'Gibraltar']]
The <entity_0> was held on <entity_1>, in which Gibraltarian citizens were asked whether they wished to pass under Spanish sovereignty, with Gibraltarians keeping their British citizenship and a special status for <entity_3> within Spain; or remain under British sovereignty, with its own self-governing institutions. <entity_3> National Day has been celebrated annually on 10 September since 1992 to commemorate <entity_3>'s first sovereignty <entity_2> of <entity_1>.
['referendum']