Assertion: penrhyn heather blue slate | /r/HasProperty | bangor blue
Facets:
value: aka
type: DEGREE
Source sentences:
text: The Penrhyn Heather Blue slate, aka Bangor Blue, has a heather blue or purple colour and achieves the highest grade in the British Standards (BS) EN 12326 –
text: The Penrhyn Heather Blue slate, also known as Bangor Blue, is one of the most widely used slates.