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: industries 
 Word2: communications
answer:
for


question:
Word1: flow 
 Word2: disappointment
answer:
of


question:
Word1: commission 
 Word2: exchange
answer:

on