Question: What G-type main sequence star has the largest angular diameter?
Paraphrase: What G-type fundamental grouping star has the biggest precise diameter?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q5864 . ?ent wdt:P5348 ?obj } ORDER BY DESC(?obj)LIMIT 5 
Answer: Sun, Beta Canum Venaticorum