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• n  a sister who has only one parent in common with you

• half-sister
• stepsister

News & Articles

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• Michelle Obama and her daughters visit Berlin Wall, Holocaust memorial
  First lady Michelle Obama and her daughters toured some of Berlin's most iconic sites on Wednesday as President Obama prepared to make a major speech at the Brandenburg Gate. The first family landed in the German capital on Tuesday evening to a red carpet and honor guard welcome.Barack Obama's half sister, Auma Obama, who lived in Germany for many years, joined Michelle, Malia and Sasha as they ...
  June 19, 2013 - NBC NEWS