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".

Example Input: Word1: underwriter 
 Word2: exchange
Example Output: of

Example Input: Word1: materials 
 Word2: construction
Example Output: for

Example Input: Word1: factory 
 Word2: automobile
Example Output:
for