Assertion: robin's song | /r/HasProperty | pleasant
Facets:
value: to the human ear
type: TRANSITIVE-OBJECT
value: especially
type: MANNER
Source sentences:
text: The song of members of the genera Cyphorhinus and Microcerculus have been considered especially pleasant to the human ear, leading to common names such as song wren, musician wren, flutist wren, and southern nightingale-wren.