Assertion: overhead projector | /r/HasProperty | device
Facets:
Source sentences:
text: An overhead projector (OHP) is a device that allows you to display images from either a computer/laptop or images created in real time.
text: Overhead projectors are devices used to convey visual information to an audience in a lecture hall or other meeting place.
text: Overhead projectors are devices used to project images onto a screen.