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: 'Socialite Paris Hilton , who is currently dating Benji Madden , confessed she would love to date Prince William if the royal ditches his girlfriend .', Argument/Subject 1: 'pari hilton', Argument/Subject 2: 'benjus madden'

A: be date
****
Q: Sentence: 'Emerald is the birthstone for May and is known for being the 20th and 35th wedding anniversary gemstone .', Argument/Subject 1: 'emerald', Argument/Subject 2: 'may'

A: be birthstone of
****
Q: Sentence: 'Yinchuan is capital of Ningxia .', Argument/Subject 1: 'yinchuan', Argument/Subject 2: 'ningxium'

A:
be capital of
****