If

'Q f R' means 'Q is the daughter of R',

'Q + R' means 'Q is the son of R',

'Q % R' means 'Q is the wife of R'.

'Q © R' means 'Q is the brother of R's wife and

'Q μ R' means 'Q is the father of R,

Then how is N related to K in the following expression?

M μ N f O f P + K