Detailed Instructions: Given a sentence and two mentions from the text (arguments), indicate a phrase (a verb or noun phrase) that describes the relationship between the provided arguments.
Problem:Sentence: 'The city of Petrograd was renamed Leningrad in his honour : this remained the name of the city until the collapse of the Soviet Union in 1991 , when it reverted to its original name St Petersburg .', Argument/Subject 1: 'petrograd', Argument/Subject 2: 'leningrad'
Solution:
be rename