question: In addition to smoke detectors , what do fire safety officials suggest people replace batteries in when they set their clocks twice a year ?
answer: carbon monoxide detectors
turker_answer: In addition to smoke detectors , fire safety officials suggest people replace batteries in their carbon monoxide detectors when they set their clocks twice a year .
rule-based: In addition to smoke detectors , fire safety officials suggest carbon monoxide detectors people replace batteries in when they set their clocks twice a year .