1. An apparatus for performing a statistical analysis of documents with respect to a facet, the apparatus comprising: a processor; and a memory coupled to the processor, wherein the memory comprises instructions which, when executed by the processor, cause the processor to implement a document analysis device for performing a statistical analysis of documents with respect to a facet, wherein the instructions cause the processor to: accept, by an acceptance module executing within the document analysis device, a natural language sentence; extract, by an extraction module executing within the document analysis device, a first facet from the natural language sentence; perform, by a statistical analysis module executing within the document analysis device, a first statistical analysis of a set of documents with respect to the first facet; determine, by the statistical analysis module, a value of the first facet based on a result of the first statistical analysis responsive to information being extracted from the natural language sentence, the information requesting for a second statistical analysis; perform, by the statistical analysis module, the second statistical analysis of the set of documents using the value of the first facet; and present, by a user interface executed by the processor, a second facet determined based on a result of the second statistical analysis.