Elena's sleepover is the 20th at 6 pm to the 21st at 9 am. Please set a reminder two hours ahead.
[IN:CREATE_REMINDER [SL:TODO [IN:GET_TODO [SL:TODO Elena 's sleepover ] is [SL:DATE_TIME the 20th at 6 pm to the 21st at 9 am ] ] ] . Please set a reminder [SL:DATE_TIME two hours ahead ] . ]