Assertion: fern's leaf | /r/CapableOf | perform photo synthesis
Facets:
value: with a help of sun
type: CAUSE
Source sentences:
text: Upper green leaves perform photo synthesis, lower lack chlorophyll.
text: Leaves perform photosynthesis (production of food from the carbon dioxide and water, with a help of sun).
text: Upper green leaves perform photo synthesis, lower lack chlorophyll.