Assertion: perch | /r/HasProperty | marked by narrow perching surface
Facets:
value: at the top
type: LOCATION
Source sentences:
text: This perch is marked by a narrow perching surface at the top (roughly 9" across on this one) and a wide base (roughly 24" between the rays at the widest points) with vertical rays (the outermost rays are roughly 20" long) to prevent the bird from passing under the perch and tangling.