what is the arrival time to Nile boat in cairo from mona's house?
[IN:GET_ESTIMATED_ARRIVAL what is the arrival time to [SL:DESTINATION [IN:GET_LOCATION [SL:POINT_ON_MAP Nile boat ] in [SL:LOCATION_MODIFIER cairo ] ] ] from [SL:SOURCE [IN:GET_LOCATION_HOME [SL:CONTACT mona ] 's house ] ] ? ]