1. An assisted decision-making system comprising: a processor; and a memory comprising: a knowledge base comprising a plurality of executable stories, a given executable story comprising: an executable belief network comprising a plurality of hypotheses; and a plurality of evidence templates representing respective text segments containing information related to the plurality of hypotheses comprising the belief network, a given evidence template listing at least two of the location, magnitude, mechanism, and associated actor of an event of interest described in a represented text segment; and computer executable instructions, executed by the processor, comprising a plurality of decision algorithms that retrieve executable stories from the knowledge base, modify the retrieved executable stories, and return the modified executable stories to the knowledge base.