Text: The national museums have free admission, but the SuperSaver Card, available at any Tourism Centre or participating attraction, will admit you to a number of others at a reduced price with priority entry.
Entailment: The SuperSaver Card, available at any Tourism Centre or participating attraction, will admit you to a number of museums at a reduced price with priority entry, and you can still enter the national museums for free.
Contradiction: The national museums have paid entry, same for all other museums.