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Property "Has description" (as page type) with input value "The Blind Person's Assistant is based on ultrasound measurements. The sensor in bracelet measures distance in front of it in the range up to 12 feet (4 meters). In case of an obstacle in the range of 0.5 meters or closer, the buzzer creates a high sound and the low-power laser creates a light beam." contains invalid characters or is incomplete and therefore can cause unexpected results during a query or annotation process.

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