You will be given a definition of a task first, then some input of the task.
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.

Sentence: 'Basilicata is a region in the south of Italy , bordering on Campania to the west , Puglia to the east , Calabria to the south , it has one short coastline on the Tyrrhenian Sea and another of the Gulf of Taranto in the Ionian Sea to the south-east .', Argument/Subject 1: 'calabrium', Argument/Subject 2: 'italy'
Output:
be region of