Assertion: tsetse fly | /r/HasAspect | prominent economic impact
Facets:
value: as the biological vectors of trypanosomes
type: MANNER
value: in sub-saharan africa
type: LOCATION
Source sentences:
text: They have a prominent economic impact in sub-Saharan Africa as the biological vectors of trypanosomes, which cause human sleeping sickness and animal trypanosomiasis.