instruction:
In this task, you are given a piece of an article. Your task is to generate a short summary of the text. Try to give the summary in just one sentence.
question:
US President Barack Obama in an interview aired Friday said Russia must ''move back'' its troops from the Ukraine border and start negotiating, AFP reported.
answer:
Barack Obama said Russia must move back its troops.

question:
A 12th Sexually Violent Predator has moved to Colorado Springs after being released from prison, according to police.
answer:
Scotland have beaten Kenya.

question:
No. 1 Southern California, the defenders of five consecutive national championships, will look to add to its 35-game win streak during action in Pomona and La Verne this weekend.
answer:
A friend of Carolyn Cassady has confirmed the writer has died.