Derartu Tulu became the first black African women to win an Olympic gold medal by taking first in the 10,000 at the 1992 Barcelona Games .
Derartu Tulu is a cousin of Dibaba 's .
Derartu Tulu , a cousin of Dibaba 's , became the first black African women to win an Olympic gold medal by taking first in the 10,000 at the 1992 Barcelona Games .