1. A method comprising: automatically extracting a plurality of assertions from a plurality of publications, wherein each of the plurality of assertions encodes a relationship between a subject and an object; manually editing the plurality of assertions automatically extracted from the plurality of publications to construct a custom knowledgebase for a particular biological field; and constructing a sequence dataset comprising a plurality of called biological sequences, wherein each of the plurality of called biological sequences is associated with one or more of the plurality of assertions of the custom knowledgebase.