You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
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Question: Category: HISTORIC JOURNALS 
Clue: On January 18, 1912 he arrived at a tent near the pole & found "a record of five Norwegians having been there"

Answer: robert f. scott


Question: Category: INVENTIONS 
Clue: Josephine Cochrane's 1886 version of this consisted of a copper boiler, wire baskets & a pump

Answer: a dishwasher


Question: Category: MEDICINE 
Clue: His vaccine was announced safe in April '55, the 10th anniversary of FDR's death

Answer:
dr. jonas salk