Assertion: grade | /r/HasProperty | become established
Facets:
value: since the year
type: TEMPORAL
value: well
type: DEGREE
value: with the following
type: OTHER
Source sentences:
text: Since the year 2000, the colours and grades have become well established with the following used to base the grades (but there are always exceptions): 1a-1c is reserved for slabs that can be climbed without the use of hands.