What is the position  elected in  for  Robert Gascoyne - Cecil, 3rd Marquess of Salisbury held as  Member of the 18th Parliament of the United Kingdom ?
SELECT ?value WHERE { wd:Q243705 p:P39 ?s . ?s ps:P39 wd:Q41582558 . ?s pq:P2715 ?value}
robert gascoyne-cecil, 3rd marquess of salisbury: Q243705 member of the 18th parliament of the united kingdom: Q41582558