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.
Q: Sentence: 'The Church of God in Christ , Incorporated is a Pentecostal body , the largest Pentecostal Christian church in the United States .', Argument/Subject 1: 'church', Argument/Subject 2: 'christian'
A:
be body of