13. A computer system for generating inquiries comprising: a processor; template means executable by the processor and providing a plurality of templates to a computer-based modeler modeling an investigation of a subject problem, the computer-based modeler being executed by a computer and generating an investigation model, and the investigation model having a respective domain, different investigations modeled by the computer-based modeler having different respective domains, each template outlining a respective inquiry and being associated with one or more semantic types, and each template having one or more parameters for defining a query instance of the respective inquiry; user input means for enabling user selection and use of a template from the plurality, including enabling user-specification of values of parameters of the user selected template; and query generation means coupled to the processor and responsively producing a query instance using the user selected template and user-specified values in context of the respective domain of the investigation model, such that the produced query instance queries information about the subject problem.
13. A computer system for generating inquiries comprising: a processor; template means executable by the processor and providing a plurality of templates to a computer-based modeler modeling an investigation of a subject problem, the computer-based modeler being executed by a computer and generating an investigation model, and the investigation model having a respective domain, different investigations modeled by the computer-based modeler having different respective domains, each template outlining a respective inquiry and being associated with one or more semantic types, and each template having one or more parameters for defining a query instance of the respective inquiry; user input means for enabling user selection and use of a template from the plurality, including enabling user-specification of values of parameters of the user selected template; and query generation means coupled to the processor and responsively producing a query instance using the user selected template and user-specified values in context of the respective domain of the investigation model, such that the produced query instance queries information about the subject problem. 16. A computer system as claimed in claim 13 , wherein the semantic types are based on classes in an ontology.