instruction:
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".
question:
Word1: rate 
 Word2: sales
answer:
of


question:
Word1: fee 
 Word2: financing
answer:
for


question:
Word1: series 
 Word2: sounds
answer:

of