Assertion: estrogen | /r/CreatedBy | the placenta
Facets:
value: during pregnancy
type: TEMPORAL
value: for women
type: TRANSITIVE-OBJECT
value: usually
type: TEMPORAL
Source sentences:
text: but it is also produced by the placenta during pregnancy.
text: Estrogen is usually produced in the placenta and ovaries for women.
text: It is also produced by the placenta during pregnancy.