Sentence:  There is a <WSD>line</WSD> of houses. 
Meaning of the word marked with <WSD> tags:  A more-or-less straight sequence of people, objects, etc., either arranged as a queue or column and often waiting to be processed or dealt with, or arranged abreast of one another in a row (and contrasted with a column), as in a military formation. (from mid-16thc.)