query: A question about using articles before a single letter in the alphabet
positive_passages.docid: 9242
positive_passages.text: Should individual letters be preceded with "an"?
negative_passages.docid: 156781
negative_passages.text: Should I write $i$ before or after the imaginary part?
negative_passages.docid: 7513
negative_passages.text: Use (or non-use) of articles before abstract nouns
negative_passages.docid: 71137
negative_passages.text: Why is using only one "a" enough in this sentence?
negative_passages.docid: 88826
negative_passages.text: Using a comma before "but"
negative_passages.docid: 40924
negative_passages.text: When to use a comma before "and"
negative_passages.docid: 96623
negative_passages.text: When articles are placed after adjectives?
negative_passages.docid: 118654
negative_passages.text: Articles in a list
negative_passages.docid: 123638
negative_passages.text: The correct omission of the definite and indefinite articles
negative_passages.docid: 40471
negative_passages.text: Is it ever correct to have a space before a question or exclamation mark?
negative_passages.docid: 7532
negative_passages.text: About definite article before "Earth", "Moon" and "Sun"
negative_passages.docid: 151650
negative_passages.text: An article before the word "Equation"
negative_passages.docid: 120891
negative_passages.text: Zero article before the word "part" - what is the particular reason for this?
negative_passages.docid: 106901
negative_passages.text: What word type is "before" when used as in this example?
negative_passages.docid: 117686
negative_passages.text: Can articles be omitted in front of the second and third nouns?
negative_passages.docid: 14397
negative_passages.text: Plurals of acronyms, letters, numbers — use an apostrophe or not?
negative_passages.docid: 6689
negative_passages.text: Do you use "a" or "an" before acronyms / initialisms?