This is a problem that fascinates me as well. How humans effortlessly look at a document with tables and columns Etc. and effortlessly extract all of the 'facto

This is a problem that fascinates me as well. How humans effortlessly look at a document with tables and columns Etc. and effortlessly extract all of the 'factoid' bits from the document and often their relationships. Back at IBM there had been some work on extracting tables from PDFs but it turns out to be a pretty challenging problem to generalize.