Assertion: carbohydrate | /r/CapableOf | display sialic acid
Facets:
value: often
type: TEMPORAL
Source sentences:
text: For example, carbohydrates often display chemical groups such as: N-acetyl (e.g. chitin), sulphate (e.g. glycosaminoglycans), carboxylic acid (e.g. sialic acid) and deoxy modifications (e.g. fucose and sialic acid).