Question: What is the aircraft family with the highest maximum glide ratio whose manufacturer is Grob Aircraft ?
Paraphrase: Which family of airplanes, made by Grob Aircraft, is capable of the highest maximum glide ratio?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q15056993 . ?ent wdt:P1470 ?obj . ?ent wdt:P176 wd:Q561036 } ORDER BY DESC(?obj)LIMIT 5 
Answer: G104 Speed Astir, Grob G102 Astir