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: system 
 Word2: diagnostics

SOLUTION: for

PROBLEM: Word1: movement 
 Word2: photography

SOLUTION: in

PROBLEM: Word1: effort 
 Word2: buying

SOLUTION:
for