1930–31 Southern Football League
{'<entity_0>': 'Southern Football League', '<entity_1>': '1930–31 Southern Football League', '<entity_2>': 'Dartford F.C.'}
[['1930–31 Southern Football League', 'sports season of league or competition', 'Southern Football League'], ['1930–31 Southern Football League', 'winner', 'Dartford F.C.']]
The <entity_1> was the 33rd in the history of the <entity_0>. <entity_2> were declared <entity_0> champions after winning a championship play-off 7–2.
['sports season']