In a certain code language, '-' represents 'x', '÷' represents '+', '+' represents '÷' and 'x' represents '-'. Find out the answer to the following question.
P, Q, R, S & T are sitting in a straight line facing North. P sits next to S but not to T. Q is sitting next to R who sits on the entrance left corner. Who sits to the left of S if T does not sit next to Q?