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".

Ex Input:
Word1: fee 
 Word2: financing

Ex Output:
for


Ex Input:
Word1: underwriter 
 Word2: exchange

Ex Output:
of


Ex Input:
Word1: purchase 
 Word2: stock

Ex Output:

of