Assertion: boiler | /r/HasProperty | the most popular design
Facets:
value: in europe
type: LOCATION
value: in scandinavia
type: LOCATION
value: for many years
type: TEMPORAL
Source sentences:
text: They are almost exclusively used for steam production in connection with utility electricity generation, and have been the most popular design in Europe and Scandinavia for many years.
text: The first thing to look at is your boiler—the most common heating source in any water- or steam-based system.