What time should my dad leave his house to arrive at my house?
[IN:GET_ESTIMATED_DEPARTURE What time should [SL:SOURCE [IN:GET_LOCATION_HOME [SL:CONTACT_RELATED my ] [SL:TYPE_RELATION dad ] leave his house ] ] to arrive at [SL:DESTINATION [IN:GET_LOCATION_HOME [SL:CONTACT my ] house ] ] ? ]