ABUJA, Nigeria — A federal court in Nigeria on Wednesday sentenced four gunmen to death in the killing of at least 50 people during a 2022 attack on a church in a southwestern part of the country. Children were among those killed in the assault just as mass was ending at the St. Francis Catholic Church in the town of Owo in Ondo State on June 5, 2022. Scores of people also were wounded, overwhelmi...