fowler.xsd Typed observations, using Fowler's [1998] Analysis Patterns terminology 2003-01-30 Restrict resultOf to be quantityResult, observable to be measurand Substitute measurand for observable if the result is a quantity and the observation is made using a sensor with a single element. Restrict resultOf to be categoryResult Restrict resultOf to be countResult Restrict resultOf to be booleanResult Restrict resultOf to be geometryResult Restrict resultOf to be temporalResult