Assertion: puffin's island | /r/HasProperty | the longstone
Facets:
Source sentences:
text: Inner Farne, Knoxes Reef and the East and West Wideopens (all joined together on very low tides) and (somewhat separated) the Megstone; the main islands in the Outer Group are Staple Island, the Brownsman, North and South Wamses, Big Harcar and the Longstone.