TASK DEFINITION: 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 consistency, answers should be in all lower cased letters.
PROBLEM: Category: 12-LETTER WORDS 
Clue: Meaning a beginning, it's also a school graduation ceremony

SOLUTION: commencement

PROBLEM: Category: FROGS 
Clue: Probably best known to TV viewers as Valene Ewing, she had female lead in 1972 “Frogs”

SOLUTION: joan van ark

PROBLEM: Category: COMMON BONDS 
Clue: Virginia Apgar, Florence Sabin & Helen Brooke Taussig

SOLUTION:
doctors/american women physicians