(1) Any person, whatever his nationality, who, whether in or outside the Territory, commits, or aids, abets or procures the commission by any other person of, any such grave breach of any of the scheduled conventions as is referred to in the following articles respectively of those conventions, that is to say—
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(a) article 50 of the convention set out in the First Schedule to this Act;
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(b) article 51 of the convention set out in the Second Schedule to this Act;
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(c) article 130 of the convention set out in the Third Schedule to this Act; or
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(d) article 147 of the convention set out in the Fourth Schedule to this Act,