SELECT DISTINCT COUNT(?uri) WHERE { <http://dbpedia.org/resource/Duncan_Sandys> <http://dbpedia.org/property/successor> ?x . ?x <http://dbpedia.org/property/primeminister> ?uri . }
How many prime ministers did the predecessor of Duncan Sandys  serve?
SELECT DISTINCT COUNT ( ?g ) WHERE { resource:Duncan_Sandys property:successor ?g . ?g property:primeminister ?g . }
14
The predecessor of Duncan Sandys serve [14] primeministers.
Duncan Sandys's predecessor was Prime Minister [14].
There are [14] primeminister are there of the office holder who is the successor of him .
There is [14] the head of the office holder who is his successor.
There are [14] primeminister are there of the office holder who is the successor of the person .
There is an office holder head who succeeds humans.