Assertion: monarch | /r/HasAspect | built-in compass
Facets:
Source sentences:
text: They seem to have a built-in compass that directs them to the correct course every fall and spring.
text: Monarchs have a built-in compass, and are able to reorient themselves in both longitude and latitude to head exactly toward a 50-mile-wide (80-kilometer) valley between Eagle Pass and Del Rio, Texas