Definition: 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: 'RFC 2132 DHCP Options and BOOTP Vendor Extensions March 1997 The code for this option is 27 , and its length is 1 .', Argument/Subject 1: 'dhcp', Argument/Subject 2: 'bootp'
Output:
be extension of