Assertion: city's expansion | /r/HasProperty | last major
Facets:
Source sentences:
text: In 1956, the city conducted its last major expansion when it annexed the land under O'Hare airport, including a small portion of DuPage County.
text: In 1956, the city conducted its last major expansion when it annexed the land under O'Hare airport, including a small portion of DuPage County.