Penrose stairs [SEP] discoverer or inventor
The inventor of Penrose stairs was whom? Who would be the first to discover Penrose stairs? Who made the discovery of Penrose stairs? Who made Penrose stairs known? The Penrose stairs was discovered by whom? Who was the original discoverer of Penrose stairs? Who was the discoverer of Penrose stairs?
Lionel Penrose
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Penrose stairs
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Roger Penrose
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Penrose stairs
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