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определить победителя stresses
gen.	decide the winner (Anglophile); decide on the winner (Anglophile); identify the winner (Ying)
chess.term.	determine the winner
fin.	predict a winner (dimock)
sport.	find the winner (Евгения Анатольевна)
определить победителем
gen.	select somebody as the most successful bidder (gov.uk kondorsky)

определить победителя: 9 phrases in 3 subjects

Chess	4
General	4
Makarov	1