Remind me to attend the new Zumba classes at 6 : 00 instead of 6 : 30 .
[IN:UPDATE_REMINDER_DATE_TIME [SL:PERSON_REMINDED me ] [SL:TODO attend the new Zumba classes ] [SL:DATE_TIME at 6 : 00 ] [SL:DATE_TIME of 6 : 30 ] ]