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Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
But Dr. Lawrence A. Tabak, the N.I.H.’s acting director, acknowledged during a recent congressional hearing that he did not know what other work the Wuhan institute was doing.
Source: https://www.nytimes.com/2023/02/27/us/politics/covid-origin-lab-leak-china.html