Assertion: fish's system | /r/CapableOf | produce 3000–6000 kg of fish
Facets:
value: in optimal conditions
type: TEMPORAL
value: per hectare per year
type: TEMPORAL
Source sentences:
text: Other fish also feed on the excreta of the common carp, and this helps contribute to the efficiency of the system which in optimal conditions produces 3000–6000 kg of fish per hectare per year.