ASK WHERE { <http://dbpedia.org/resource/James_Watt> <http://dbpedia.org/ontology/field> <http://dbpedia.org/resource/Mechanical_engineering> }
was james watt a mechanical engineer?
ASK WHERE { resource:James_Watt property:field resource:Mechanical_engineering }
Yes
[Yes], James Watt was a mechanical engineer.
[Yes] James Watt was working as mechanical engineer.
[Yes], Mechanical engineering is the field of James Watt.
[Yes] engineering is James Watt's domain.