Assertion: newtonian telescope's length | /r/HasProperty | 1000 mm
Facets:
Source sentences:
text: Focal length: 1000 mm.
text: Focal length: 1000mm (f/4.9).
text: Focal length: 1000 mm.
text: Focal length: 1000 mm.
text: Focal length: 1000 mm.
text: Focal length: 1000 mm.