Assertion: robin's nest | /r/HasProperty | long coarse twigs
Facets:
Source sentences:
text: The building of the nest can be divided into three stages: (1) foundation (outer wall of the nest composed of long coarse twigs and grass stems; (2) forming the mud layer (mud is incorporated into the outer frame, at the same time, grass is meshed into the hardening mud); (3) lining the nest with finer grass material.