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: 'CompactRIO , CVI , LabVIEW , National Instruments , NI , ni.com , NI TestStand and NIWeek are trademarks of National Instruments .', Argument/Subject 1: 'labview', Argument/Subject 2: 'national instrument'
A: 
be trademark of