Assertion: moon | /r/HasProperty | important to viking
Facets:
value: to keep track of time
type: PURPOSE
value: very
type: DEGREE
Source sentences:
text: While the moon was very important to the Vikings to keep track of time, it was in fact the sun that had a more central role.
text: The Moon also was important to the Vikings since it helped them keep track of time, it had its own day, Monday.