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: 'Lahiri Mahasaya was a great guru who met the Eternal Master Babaji in person and taught that if one lives honestly there is no need to alter one 's life in any noteworthy way in order to become aware of God in us .', Argument/Subject 1: 'babajus', Argument/Subject 2: 'lahirus mahasaya'
A:
be guru of