Assertion: chlorophyll | /r/HasProperty | attended by complex extraction
Facets:
value: for the purpose
type: PURPOSE
value: normally
type: DEGREE
value: relatively
type: DEGREE
Source sentences:
text: The preparation of chloroplast pigments and particularly chlorophyll from plant material is normally attended by relatively complex extraction, fractionation and precipitation for the purpose of eliminating the plant and solvent impurities.