Assertion: estuary | /r/HasProperty | some of the most polluted
Facets:
value: due to the pollutants
type: CAUSE
Source sentences:
text: Yet, due to the pollutants they extract from waters running through them, they may also be some of the most polluted as well.
text: For this reason, estuaries are some of the most fertile ecosystems on Earth, yet they may also be some of the most polluted.