Assertion: heron's number | /r/HasProperty | killed in north america
Facets:
Source sentences:
text: In North America, large numbers of great egrets were killed around the end of the 19th century so that their plumes could be used to decorate hats.
text: Large numbers of Great Egrets were killed in North America, including the Everglades, around the end of the 19th century so that their plumes could be used to decorate hats.