Assertion: amaranth's variety | /r/HasProperty | developed over time
Facets:
value: through research
type: CAUSE
value: through mutation
type: CAUSE
value: through selective cropping
type: MANNER
value: through breeding and research in biotechnology
type: CAUSE
Source sentences:
text: Modern varieties of grains have been developed over time through mutation, selective cropping, breeding and research in biotechnology.