1. A computer-implemented method for scoring an attribute of an item related to a topic of interest, comprising: retrieving a plurality of statements describing the item from a plurality of data sources, the statements including a first statement that comprises a plurality of instances of unstructured subjective information related to the item; converting each of the instances of the unstructured subjective information to a normalized form; based on the normalized form, identifying a set of the instances of the unstructured subjective information that correspond to the attribute; deriving a score for each of the instances in the set of instances of the unstructured subjective information to generate a plurality of scores; and resolving the plurality of scores to generate a single resolved score for the attribute.