You will have to show us which sentence you're talking about
Based on the themes of believe's and imagination through, a child could think of it as realism... The book begins of the night of Christmas Eve.
Who?
<span>What was who doing when he got quite?</span>
This lines could be seen as examples of sensory imaginary. More precisely it is connected to smell because of the potato and sight because of how this person is found "sitting, surrounded.." it might be said that the combination of these two images could give the reader a vision of what the writer is trying to convey.
