Assertion: grey wagtail | /r/HasAspect | grey
Facets:
Source sentences:
text: The two can be separated by the colour of their backs: the grey wagtail has a grey back while the yellow wagtail, which is a summer migrant to the UK, has a green back.
text: Grey Wagtails and yellow wagtails are often confused; the grey wagtail is resident here all the year round and has a grey head, grey-blue back and very long tail.