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Possible Duplicate:
[Singular] Is/Are [Plural]?

I'm currently writing my master thesis on Bitcoin and I'm not sure which version of this sentence is correct:

"The first most important part of the Bitcoin infrastructure are all applications that communicate with the Network."

"The first most important part of the Bitcoin infrastructure is all applications that communicate with the Network."

Or perhaps both of them are wrong?

EDIT:

Finished sentences.

Community
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ThePiachu
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1 Answers1

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It would be helpful to see the entire sentence, but the head word of the subject of the sentence, part, is singular, so, other things being equal, you need the verb to agree with it, so it has to be is. However, the sentence might be clearer as:

Those applications that communicate with the Network form the most important part of Bitcoin’s infrastructure.

Barrie England
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