TASK DEFINITION: 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".
PROBLEM: Word1: spacecraft 
 Word2: robot

SOLUTION: for

PROBLEM: Word1: protest 
 Word2: street

SOLUTION: at

PROBLEM: Word1: income 
 Word2: currency

SOLUTION:
in