Assertion: duck | /r/HasProperty | released in early 20th century
Facets:
value: mostly
type: DEGREE
Source sentences:
text: The ducks were mostly released in the early 20th century, although there are records of introductions as early as 1745 [PDF]. They've also been found in other parts of Europe, Israel, and Africa (although, as in Florida, some of these populations are escaped ornamental birds that aren't necessarily breeding on their own [PDF]).