Assertion: mercury | /r/CapableOf | turn on its axis
Facets:
value: during one of its years
type: TEMPORAL
value: so slowly
type: MANNER
Source sentences:
text: However, Mercury turns so slowly on its axis that astronomers once thought that the planet was tidally locked, with one side constantly facing the nearby sun.
text: Mercury rotates once every 58.647 days, which is exactly 2/3 of its orbital period of 87.970 days, so it turns on its axis exactly 1 1/2 times during one of its years, causing the stars to move 1 1/2 times around the sky each year.