Text: Also in the Arts Building is the Douglas Hyde Gallery, a modern two-level exhibition space it's the place to go for the cutting edge in Irish and international art (open Monday Friday 11am 6pm; Thursday until 7pm, Saturday 11am 4:45pm; lectures Wednesday 1:15pm, tours noon Saturday; free).
Entailment: The Douglas Hyde Gallery is open on Saturdays.
Contradiction: The Douglas Hyde Gallery is a single story structure.