Read the following information carefully and answer the questions which follow :
If ′A×B′ means 'A is to the South of B'.
If 'A + B' means 'A is to the North of B'.
If 'A % B' means 'A is to the East of B'.
if 'A - B' means 'A is to the West of B'.
In the equation F % Q + R - S, S is in which direction with respect to Q?