How many triangles are there in the following figure?
In a certain code language,
‘A@ B’ means ‘A is the husband of B’,
‘A # B’ means ‘A is the mother of B’,
‘A & B’ means ‘A is the daughter of B’,
‘A $ B’ means ‘A is the brother of B’.
Based on this, how is P related to M, if ‘M & N @ O # P $ Q’?