Assertion: gyroscope's position | /r/CapableOf | drift roughly one degree
Facets:
value: over the course of fifty years
type: TEMPORAL
Source sentences:
text: In ancient China, the Jin-dynasty scholar-official Yu Xi (fl. 307-345 AD) made a similar discovery centuries later, noting that the position of the Sun during the winter solstice had drifted roughly one degree over the course of fifty years relative to the position of the stars.