Any annotation tool for argument mining?

Hi, I've been testing several annotation tools for my research at university. Each one has its particular advantages but none of them seem to be fit for annotating argument relations. Inception is probably the most flexible, yet it requires too many technical requirements for installing and using it as an admin. And most importantly now, it is still not very suitable for argument mining, which would require being able to see the relations between arguments in an organised and intuitive …

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