Assertion: presentation's slide | /r/CapableOf | provide excuse
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Source sentences:
text: If there was an enthusiast in the family, any visit from relatives or the arrival of a new batch of Kodachrome slides from the film processing service provided an excuse to bring out the entire collection of 35 mm slides, set up the slide projector and the screen, turn out the lights, then test the endurance of the assembled audience with a marathon of old vacation photos and pictures taken at weddings, birthdays and other family events, all accompanied by live commentary.