What daughter of William Cavendish-Bentinck, 3rd Duke of Portland was married to William Bentinck, 2nd Duke of Portland?
SELECT ?answer WHERE { wd:Q157208 wdt:P25 ?answer . ?answer wdt:P26 wd:Q125872}
william cavendish-bentinck, 3rd duke of portland: Q157208 william bentinck, 2nd duke of portland: Q125872