Answer :
Final answer:
The sentence does not contain any punctuation or capitalization errors.
Explanation:
The sentence "John your sentence is grammatically correct; it is however quite wordy" does not contain any punctuation or capitalization errors. Punctuation errors occur when there is a mistake in the use or placement of punctuation marks such as periods, commas, or question marks. Capitalization errors occur when there is incorrect or inconsistent use of capital letters. In this sentence, both the punctuation and capitalization are correct.
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