9. The method as set forth in claim 6 , wherein the determining of one or more candidate tables of contents includes: determining candidate tables of contents including text fragments whose links can be selected to satisfy the criteria (i) and (ii).
6. The method as set forth in claim 1 , wherein the selecting includes: determining one or more candidate tables of contents each including a contiguous sub-sequence of the ordered sequence of text fragments; ranking the candidate tables of contents, the ranking of each candidate being based at least on links whose source text fragments are included in the candidate table of contents; selecting the highest ranked candidate table of contents as a selected table of contents; and selecting the target text fragment for each entry of the selected table of contents.