Generate a correct and concise answer for the question based on the words in the context.

Q: Context : This has never been established as there are no witnesses to any verbal exchange and Susan Newell never pleaded guilty (first blaming her husband then citing insanity without giving details into the murder.)
Question : Which crime led to the conviction of Susan Newell?

A: murder
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Q: Context : The Sinclair Scientific calculator was a 12-function, pocket-sized scientific calculator introduced in 1974, dramatically undercutting in price other calculators available at the time.
Question : In which year was the service entry date for Sinclair Scientific?

A: 1974
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Q: Context : Marilyn Bevans was the first sub-three-hour, African-American female marathoner, and the first national-class black female American marathoner.
Question : What gender class does Marilyn Bevans belong to?

A:
female
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