Tokyo Olympics: Simone Biles quits gymnastics final over mental health concerns.

Simone Biles has withdrawn from the women' s all-around gymnastics final at the Tokyo Olympics to protect her mental health.

Biles is a four-time Olympic gold medallist, multiple world champion and considered by many to be the greatest gymnast of all time.

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German voters take to the polls for the national election.

German voters take to the polls for the national election.

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