1. A machine for producing new evidence for an assisted decision making system, comprising: a processor; a memory containing: an information extraction algorithm that extracts evidence from unformatted text segments to produce an evidence template and an associated confidence value from a given text segment; and a plurality of inferencing algorithms, a given inferencing algorithm receiving evidence templates from the information extraction component and generating a story fragment comprising at least one hypothesis, evidence supporting the at least one hypothesis, and respective belief values associated with the at least one hypothesis from the evidence stored in the knowledge base.