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: commission 
 Word2: exchange

Output: on


Input: Consider Input: Word1: life 
 Word2: frontier

Output: at


Input: Consider Input: Word1: force 
 Word2: task


Output: for