Sentence:  To address this novel legal quandary, one legal treatise on copyright has developed the concept of fragmented literal similarity, a method of determining whether a sample-based work is substantially similar to the source it <WSD>sampled</WSD>. The name reflects the exactness of the similarity between the snippet of a track that is <WSD>sampled</WSD> and the <WSD>sampled</WSD> copy of that snippet. 
Meaning of the word marked with <WSD> tags:  To reuse a portion of (an existing sound recording) in a new piece of music.