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: theory 
 Word2: extinction

Ex Output:
about


Ex Input:
Word1: outlines 
 Word2: beach

Ex Output:
of


Ex Input:
Word1: engine 
 Word2: titanium

Ex Output:

of