Inference task is being overloaded - needs to be broken down

[HareeshBahuleyan]

inference task is being overloaded :-/ Annotations, summarizations and translations are all inferences. But they all handle different parameters, that in turn create the same set of parameters for the inference task. How can we model this? Maybe with a specific type param that holds ann/summ/trans specific subparams?

Originally posted by @javiermtorres in #936 (comment)