l-ʔabu -ʕaawan maʕ ʔibn-uh w-bint-uh { lamma ʕimlu waaʤib-hum sawijjeh / b-ʃakel munfaṣil }.
the-father.NOM -helped with son-his.GEN and-daughter-his.GEN  together.ACC did homework.ACC-their together.ACC  in-manner.GEN separate.GEN 
The father helped his son and daughter { when they did their homework together / separately }.