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: 'XHTML is a modified version of HTML that is fully XML compatible , so that it can be processed by XML parsers .', Argument/Subject 1: 'xhtml', Argument/Subject 2: 'html'
[A]: be version of


[Q]: Sentence: 'The spies find out that Saul has indeed come to kill David .', Argument/Subject 1: 'david', Argument/Subject 2: 'saul'
[A]: kill


[Q]: Sentence: 'Saul continues to try and kill David .', Argument/Subject 1: 'david', Argument/Subject 2: 'saul'
[A]:
kill