All golf courses on the Costa Blanca are open to visitors, and clubs, caddies, and occasionally, electric trolleys can be hired.
All golf courses on the Costa Blanca are closed to visitors. 
mnli hypothesis: All golf courses on the Costa Blanca are closed to visitors.  premise: All golf courses on the Costa Blanca are open to visitors, and clubs, caddies, and occasionally, electric trolleys can be hired.