Filip has tasted enough apples to know that red apples always taste good.
Yellow apples may taste good sometimes and bad sometimes. There's nothing about yellow apples in the atory so we don't know anything about yellow apples, but red apples always taste good.
Green apples may taste good sometimes and bad sometimes. There's nothing about green apples in the atory so we don't know anything about green apples, but red apples always taste good.
Filip grabbed an apple after the lights went out, and he tasted it. It tasted BAD.
Yellow apples taste bad SOMEtimes but not always. So it could have been a yellow apple. Nobody knows.
Green apples taste bad SOMEtimes but not always. So it could have been a Green apple. Nobody knows.
Red apples never taste bad. If you bite into a red apple, it's always gonna taste good.
The apple that Filip bit into tasted bad. It did NOT taste good. So it could NOT have been a red apple.
The apple was not red.