In a certain code language,

‘A + B’ means ‘A is the mother of B’,

‘A – B’ means ‘A is the daughter of B’,

‘A × B’ means ‘A is the husband of B’,

‘A ÷ B’ means ‘A is the sister of B’.

Based on the above, how is M related to Q if ‘M ÷ N – O × P + Q’ ?