7. The method of claim 1 , wherein the obtained sets of annotations are clustered into annotation clusters based on the features within the piece of source data identified by the annotations using the distributed data annotation server system.
7. The method of claim 1 , wherein the obtained sets of annotations are clustered into annotation clusters based on the features within the piece of source data identified by the annotations using the distributed data annotation server system. 8. The method of claim 7 , wherein: the set source data comprises image data; and the annotation clusters comprise annotations that are within a distance threshold from each other within the image data.