Assertion: callery pear | /r/HasSubevent | massive landscape plantings
Facets:
Source sentences:
text: In the 1950s, callery pear emerged in U.S. commerce as a promising new ornamental tree, leading to massive landscape plantings.
text: In the 1950s, callery pear emerged in U.S. commerce as a promising new ornamental tree, leading to massive landscape plantings.