Complex sentence: U.S. President Barack Obama called the shooting "horrible and tragic" and stated, "We are committed to bringing whoever was responsible to justice, ensuring the safety of our people, and caring for those who have been wounded".
Split into simpler sentences: U.S. President Barack Obama called the shooting "horrible and tragic". He said: "We are committed to bringing whoever was responsible to justice, ensuring the safety of our people, and caring for those who have been wounded".