Original:   In 1977, he made his first journey outside Africa, travelling to New York, where he had a show at the Maryknoll Sisters Ossining Center .
Revised:  Lilanga's talents were recognized by Maryknoll Sister Jean Pruitt, an American aid worker promoting Tanzanian art. In 1977, he made his first journey outside Africa, travelling to New York, where he had a show at the Maryknoll Sisters Ossining Center .
Edit intent: meaning-changed