Sentence:  It was not far from the house; but the ground sank into a depression there, and the ridge of it behind shut out everything except just the roof of the tallest hayrick. As one sat on the sward behind the <WSD>elm</WSD>, with the back turned on the rick and nothing in front but the tall <WSD>elms</WSD> and the oaks in the other hedge, it was quite easy to fancy it the verge of the prairie with the backwoods close by. 
Meaning of the word marked with <WSD> tags:  A tree of the genus "Ulmus" of the family Ulmaceae, large deciduous trees with alternate stipulate leaves and small apetalous flowers.