4. For the purposes of any proceedings under this Act, it shall be deemed until the contrary is proved, that any movable or immovable property acquired by a person has been derived or realized directly or indirectly from any unlawful activity, or are the proceeds of any unlawful activity, if such property-
(a) being money, cannot be or could not have been-
| | (i) part of the known income or receipts of such person; or | | |
| | (ii) money to which his known income or receipts has or had been converted; or | | |
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(b) being property other than money, cannot be or could not have been-
| | (i) property acquired with any part of his known income or receipts; and | | |
| | (ii) property which is or was part of his known income or receipts; and | | |
| | (iii) property to which is any part of his known income or receipts has or had been converted. | | |
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