Assertion: slide projector | /r/HasProperty | viewed
Facets:
Source sentences:
text: These types of photographs can only be viewed when light passes through them, so they must be held up to a light source or inserted into a slide projector to be viewed.
text: These types of photographs can only be viewed when light passes through them, so they must be held up to a light source or inserted into a slide projector to be viewed.
text: These types of photographs can only be viewed when light passes through them, so they must be held up to a light source or inserted into a slide projector to be viewed.