What did Einstein call “the most difficult thing to understand”?

Question
In the film Gremlins what is the true name for Gizmos race?
Answer
Mogwi

Question
Assassin Magazine and Sofa come from which language?
Answer
Arabic

Question
Of what are Karakul, Texel, Romney Marsh types?
Answer
Sheep

Question
Gin Triple Sec (quantreau) and pineapple juice what cocktail?
Answer
Aloha