generate questions: Electrocution was the preferred method of execution during the 20th century. Electric chairs have commonly been nicknamed Old Sparky; however, Alabama's electric chair became known as the "Yellow Mama" due to its unique color. Some, particularly in Florida, were noted for malfunctions, which caused discussion of their cruelty and resulted in a shift to lethal injection as the preferred method of execution. Although lethal injection dominates as a method of execution, some states allow prisoners on death row to choose the method used to execute them.
What was a common nickname for the electric chair? {sep_token} What color was Alabama's electric chair? {sep_token} What state notably had electric chair malfunctions? {sep_token} Due to electric chair malfunctions, what method of execution became preferred? {sep_token} Prior to the popularity of lethal injection, what was the preferred method of executing criminals in America?