Legal case factors are textually represented facts which are represented in reported legal case decisions. Precedent decisions contribute to the decision of a case under consideration. As textually represented facts, factors linguistically encode semantic properties and relationships among the entities which can be leveraged to identify and extract the legal case factors from decisions. We integrate legal and linguistic resources in a text analysis tool with which we annotate textual passages. Using annotations tailored to legal case factors, the legal researcher can rapidly zero in on textual spans which represent specific combinations of factors, participants, and semantic properties which bear on who played what role with respect to a factor. The research reports progress on the development of a tool.