I have to train a DocQuery model on a custom dataset of documents(balance sheets,profit loss documents, etc, example shown below) and i have to annotate it to be able to train a DocQuery donut model and be able to ask it questions about the document. From my research i saw that we had to annotate it in a json format so how would i go about doing that or if there are any free tools available to do that.
I tried a few tools online but they didnt have a json format and some basic research into this.