(2) Whoever, in one or more official proceedings that relate to the prosecution of a capital felony, willfully makes two or more material statements under oath which contradict each other, commits a felony of the second degree, punishable as provided in s. 775.082, s. 775.083, or s. 775.084.
(3) In any prosecution for perjury under this section:
(b) The question of whether a statement was material is a question of law to be determined by the court.
(c) It is not necessary to prove which, if any, of the contradictory statements is not true.
(d) It is a defense that the accused believed each statement to be true at the time the statement was made.
