ios - NSPredicate for one - to - one relashionships -

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i have 2 entities 1 called game (which has boolean attribute called synchronized) , 1 called coupon (witch has boolean attribute called won) game , coupon connected via one-to-one relationship called hascoupon.

i want fetch games have synchronized = false , won = true.

nspredicate(format: "synchronized = false && hascoupon.won = true")

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