Assertion: dragon's head | /r/HasProperty | available in vikings sets
Facets:
Source sentences:
text: Those dragons were slightly different from each other and had only some elements in common, such as the head, which was only available in Vikings sets (and one Knights' Kingdom II set from 2008, but merely as an ornament and not as part of a dragon), the wings, which were also used in later dragon models, and the tail pieces, which made their debut as dinosaur tails in 2001.