s4agri:generates
the definitions is "A relation to represent the yield generated by a Crop.". I would assume the domain is s4agri:Crop (subclass of FeatureOfInterest) and the range is s4agri:Yield
Now there is another issue: s4agri:Yield is defined as a class (not a subclass of FeatureOfInterest), but in Figure 6 of the ontology documentation it's displayed as an instance of saref:Property
according to saref-portal#9 , it should be better modeled as an instance of saref:Property, and the generic property s4agri:generates is clearly uneeded.