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".

Input: Consider Input: Word1: building 
 Word2: stone

Output: of


Input: Consider Input: Word1: loan 
 Word2: disaster

Output: for


Input: Consider Input: Word1: practice 
 Word2: sales


Output: for