Premise: They also have their own language, Ibicenco, a dialect related to the mallorqu? (Majorcan) branch of the Catalan language, though Castilian is spoken as well.
Hypothesis: Ibicenco is the dominant language over Castilian, however most people know both.
Is the hypothesis entailed by the premise?
Possible answers:
[A]. yes
[B]. it is not possible to tell
[C]. no And the answer is:
[B].