Question: In which serial ordinal was Eudoxia Lopukhina was spouse of Peter the Great?
Paraphrase: in which serial ordinal was peter the great married to eudoxia lopukhina
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q8479 p:P26 ?s . ?s ps:P26 wd:Q240145 . ?s pq:P1545 ?value}