Assertion: planetarium | /r/HasProperty | constructed
Facets:
Source sentences:
text: A third option was conceived of by S. Frank Page (Assistant Secretary and editor of Stardust, the newsletter of the Royal Astronomical Society of Canada - Edmonton Centre) in approximately November 1958, when he suggested that a planetarium be constructed as he anticipated that city lights would interfere with an observatory.
text: The planetarium was constructed and opened in 1976.