Assertion: dolphin's side | /r/HasProperty | separated to white under-side
Facets:
value: by a grey line
type: CAUSE
value: from their light grey
type: OTHER
Source sentences:
text: The upper-side of their bodies is either dark grey or blue-black in colour and is separated from their light grey to white under-side by a grey line which runs from their beak to the base of their tail.