who created the sumner monument and also the madonna on a crescent moon in hortus conclusus ?
SELECT DISTINCT var_uri where brack_open dbr_Sumner_Monument_ attr_open Earl_Park,_Indiana attr_close dbp_artist var_uri sep_dot dbr_Madonna_on_a_Crescent_Moon_in_Hortus_Conclusus dbp_artist var_uri brack_close