lʔabu ʕaawan maʕ ʔibnuh wbintuh { lamma ʕimlu waaʤibhum sawijjeh / bʃakel 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 }.