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.
Input: Sentence: 'When Texas joined the Union the first time , a clause was included that allowed the state to secede at any time , but since it joined the Confederacy during the Civil War and was defeated it is considered conquered territory and lost its right to secede .', Argument/Subject 1: 'texa', Argument/Subject 2: 'union'
Output:
join