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Basically my question is what is the correct treatment of copular verbs in the following sentence: "The car is red."

According to Google Natural Language API, the root is the verb "is" and the "car" is the nominal subject of "is".

According to Stanford CoreNLP dependency parser, the root of the phrase is "red" and "car" is the nominal subject of "red"

Google Natural Language API dependency parse

Stanford CoreNLP dependency parse

Amir
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    What is "correct" always depends on theory. There is no uniersal agreement on this kind of questions. – Natalie Clarius Jan 23 '17 at 23:30
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    Basically it's all just some theoretical constructs. As long as one theory is self-consistent and is useful for solving some kind of problem, it should be fine. There's no point for different constructs to be the same and there's certainly not really such thing as being "correct" in this case. Another example is different programming languages: as long as they can all be used to solve practical problems and are self-consistent, you wouldn't say there has to be one true "correct" syntax. The same goes for languages. – xji Feb 05 '17 at 21:21
  • Your analogy with programming languages made this very clear to me. Thanks! – Amir Feb 07 '17 at 05:14

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