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: agent 
 Word2: licensing

Ex Output:
for


Ex Input:
Word1: trading 
 Word2: securities

Ex Output:
in


Ex Input:
Word1: improvement 
 Word2: trade

Ex Output:

in