In this task, you're given an input that contains two words, and your task is to predict the correct preposition that connects these two words. Predict the preposition that explicitly conveys both words' meaning, e.g., Word1: king 
 Word2: fort: "king of fort". Possible prepositions are: "of", "on", "in", "for", "from", "about", and "with".

[Q]: Word1: gallery 
 Word2: proportions
[A]: of


[Q]: Word1: problem 
 Word2: union
[A]: of


[Q]: Word1: leak 
 Word2: roof
[A]:
in