Assertion: mm slide projector | /r/ObjectUse | used for presentation
Facets:
value: often
type: TEMPORAL
Source sentences:
text: The 35mm slide projectors were also often used for presentations at business, educational, and religious events.
text: The 35mm slide projectors were also often used for presentations at business, educational, and religious events.
text: The 35mm slide projectors were also often used for presentations at business, educational, and religious events.
text: The 35mm slide projectors were also often used for presentations at business, educational, and religious events.