30. The system of claim 21 , wherein the comparing comprises selecting a sequence of corresponding text fragments for the input text.
30. The system of claim 21 , wherein the comparing comprises selecting a sequence of corresponding text fragments for the input text. 31. The system of claim 30 , 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.