Assertion: wagtail's tail | /r/HasProperty | mistaken to be a young magpie
Facets:
value: sometimes
type: TEMPORAL
Source sentences:
text: The Pied Wagtail is a small black and white (pied) bird with a long tail that is sometimes mistaken to be a young Magpie, but is much smaller than a Magpie; in fact, it is only a little bigger than a Great Tit.