<http://www.w3.org/2000/01/rdf-schema#label>
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DESCRIBE <http://research.tib.eu/covid-19/entity/Use%20approved%20screening%20devices%20and%20tools%20to%20test%20for%20distance%20visual%20acuity%2C%20stereoacuity%20%28i.e.%2C%20discerning%20depth%20or%20distance%20of%20an%20object%29%2C%20and%20color%20deficiency%2C%20as%20recommended%20by%20an%20established%20professional%20health%20organization>
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