Sentence structure

[Haadi]

And is mine one?

This line is from the poem Abou Ben Adhem. Please describe the structure of this sentence. Which rule is followed here.

[Josef Essberger]

And is mine one?

This line is from the poem Abou Ben Adhem. Please describe the structure of this sentence. Which rule is followed here.

And to the presence in the room he said,
"What writest thou?"—The vision raised its head,
And with a look made of all sweet accord,
Answered, "The names of those who love the Lord."
"And is mine one?" said Abou.
________

It starts with a conjunction, the coordinating conjunction “and”. You can discard this for the purposes of structure. The rest of the sentence stands alone: “Is mine one?”

It means of course: “Is [my name] [one of the names of those who love the Lord]?”

It is a simple yes/no question structure like:
- Is rice food?
- Is he tall?
- Are you hungry?
- Are they teachers?

“mine” is a possessive pronoun referring in this case to the previously mentioned or implied “my name”

“one” is a pronoun referring to the previously mentioned “names of those who love the Lord”.