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: purchase 
 Word2: stock

Ex Output:
of


Ex Input:
Word1: imprisonment 
 Word2: life

Ex Output:
for


Ex Input:
Word1: options 
 Word2: policy

Ex Output:

about