Input type and output type

[moissinac]

I doesn't find a clear mention of how to specify to SpotLight the input type and the expected output result
In my case, I have html fragments as input and I would like the same fragments with RDFa annotation.

At the moment, I convert my HTML fragment in plain text, I call Spotlight, get json result with index of the annotated characters, then I search for the corresponding text in my HTML fragment and then produce my own RDFa annotation.

Some parts of the documentation about spotlight suggest that I can have directly my annotated fragments as result from Spotlight, but I can't find how to?