Assertion: tower's base | /r/AtLocation | the design
Facets:
value: in april of that year
type: TEMPORAL
Source sentences:
text: To address security issues raised by the New York City Police Department, a 187-foot (57 m) concrete base was added to the design in April of that year.
text: To address security issues raised by the New York City Police Department, a 187-foot (57 m) concrete base was added to the design in April of that year.