Assertion: puffin's island | /r/HasProperty | granite of 59.8 ± 0.4
Facets:
value: primarily
type: DEGREE
value: with slate at the southern end
type: OTHER
Source sentences:
text: The island is primarily composed of granite of 59.8 ± 0.4 – 58.4 ± 0.4 million years (from the Palaeocene epoch), with slate at the southern end; the plateau soil is mainly loam, with some peat.