← every query · class 09 · queries/manufacturer-9-makes.rq
What manufacturer 9 makes, through the inverse (example 05)
0 rows without the reasoner, 3 rows with it. Switch the regime to see where the difference comes from.
(zero rows) — an empty answer is not an error: in an open world, nothing matched.
The query
# What manufacturer 9 makes. The query of example 05 (two_regimes.py):
# onto:manufactures is the owl:inverseOf onto:manufacturedBy and is never
# asserted, so without a reasoner nothing matches.
PREFIX onto: <https://data.csoares.me/onto#>
PREFIX manufacturer: <https://data.csoares.me/manufacturer/>
SELECT ?p WHERE { manufacturer:9 onto:manufactures ?p } ORDER BY ?p