. _:b2555271 . . . . "When measuring the height of a tree, the height is the observed ObservableProperty, 20m may be the Result of the Observation, and the tree is the FeatureOfInterest. A window is a FeatureOfInterest for an automatic window control Actuator."@en . . . . . . . . . . . . . . . . . . . . . . . . . _:b2555271 . . . . . . . "The thing whose property is being estimated or calculated in the course of an Observation to arrive at a Result or whose property is being manipulated by an Actuator, or which is being sampled or transformed in an act of Sampling."@en . . . . . _:b2555271 . . . . . . "The thing whose property is being estimated or calculated in the course of an Observation to arrive at a Result or whose property is being manipulated by an Actuator, or which is being sampled or transformed in an act of Sampling."@en . . . . . . . . . . . . . . . . _:b2555271 "W3C/OGC Spatial Data on the Web Working Group"@en . . "Feature Of Interest"@en . . . . . . . _:b2555271 .