1964 All-Ireland Under-21 Football Championship
{'<entity_0>': '1964 All-Ireland Under-21 Football Championship', '<entity_1>': 'All-Ireland Under 21 Football Championship'}
[['1964 All-Ireland Under-21 Football Championship', 'sports season of league or competition', 'All-Ireland Under 21 Football Championship']]
The <entity_0> was the inaugural staging of the <entity_1>.
['sports season']