51. The at least one computer-readable storage medium of claim 50 , wherein the comparing further comprises: analyzing the input text to identify a sequence of markers in the input text; and selecting the sequence of corresponding text fragments from one or more candidate sequences matching the sequence of markers.
51. The at least one computer-readable storage medium of claim 50 , wherein the comparing further comprises: analyzing the input text to identify a sequence of markers in the input text; and selecting the sequence of corresponding text fragments from one or more candidate sequences matching the sequence of markers. 53. The at least one computer-readable storage medium of claim 51 , wherein the comparing further comprises: computing a join cost for each of the one or more candidate sequences; and selecting the sequence of corresponding text fragments from the one or more candidate sequences based at least in part on the join cost.