SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/John_Drayton> <http://dbpedia.org/property/appointer> ?uri. <http://dbpedia.org/resource/William_Clark> <http://dbpedia.org/property/appointer> ?uri . }
Who appointed both John Drayton and William Clark to their respective offices?
SELECT DISTINCT ?g WHERE { resource:John_Drayton property:appointer ?g . resource:William_Clark property:appointer ?g . }
James Madison
[James Madison] is the common appointer of John Drayton and William Clark.
[James Madison] is a joint appointer of both John Drummond and William Clark.
The appointer of them is [James Madison].
They were appointed by [James Madison].