KERET'S STORY
OTHER STORIES
Talking Animals
Goldfish
Rule of Three

Explanation:

In  Etgar Keret's "What, of This Goldfish, Would you Wish?", all the three elements which are talking animals, goldfish and rule of three include in the story.

The the talking animal would be the goldfish. And the rule of three would be the three wishes that Yoni asked people if they found a talking goldfish that granted three wishes.

The rule of three could also be implied to Sergei who was actually granted three wishes by the magic goldfish.

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the answer is subjective. i personally agree with the first answer for this question.

if one isn't strictly talking about objects then the correct answer would be 'my eyes' since according to this riddle i am asleep and in order to answer/open the door i need to open my eyes first of all.

however, if one is specifically looking for an object, then the first thing i would open would be the door

hope this !