I am doing research on a subject where almost all of the source material is in printed material, meaning that I have a lot of scans (photographs actually) that I want to reference. At first, I just extracted the facts, but then I discovered that I have to beter track the sources. What I would like is a process where I transcribe parts of the images, turn those text in some semantic format, describing the facts, and then have a tool to combine these facts and to resolve conflicts, because, yes, the source materials contain errors. I have thinking of developing my own tools for this, but if I could use some existing tool that would be nice.