Let \( PQRS \) be a quadrilateral in a plane, where \( QR=1 \), \( \angle PQR=\angle QRS=70^\circ \), \( \angle PQS=15^\circ \) and \( \angle PRS=40^\circ \). If \( \angle RPS=\theta^\circ \), \( PQ=\alpha \) and \( PS=\beta \), then the interval(s) that contain(s) the value of \( 4\alpha\beta\sin\theta^\circ \) is/are:
