Question: Who is the leader of Tenochtitlan?
Paraphrase: Who's Tenochtitlan's leader?
SPARQL (Wikidata):  select distinct ?obj where { wd:Q13695 wdt:P35 ?obj . ?obj wdt:P31 wd:Q5 } 
Answer: Moctezuma II, Chimalpopoca, Cuautemoc, Cuitláhuac, Itzcoatl, Acamapichtli, Tizoc, Axayacatl, Ahuitzotl, Huitzilihuitl, Moctezuma I