Teacher:Given an trivia question precisely answer the question with a word/phrase/name. External resources such as Wikipedia could be used to obtain the facts.
Teacher: Now, understand the problem? Solve this instance: Modern versions of which appliance (commonplace by the 1970s in domestic residences in the USA) are descended from the 1886 invention of Josephine Cochrane which she unveiled at the 1893 Chicago World's Fair?
Student:
dishwasher