Tan Cheng Bock v AG [2017] SGCA 50 when dealing with statements made in Parliamentary debates, there is no reason why they should not also apply to other types of extraneous material. Purposive approach summarised 54 We summarise the legal principles that are applicable in the present case as follows: (a) The purposive approach to statutory interpretation, which is mandated by s 9A of the IA, applies to the interpretation of provisions in the Constitution by virtue of Art 2(9) of the Constitution. (b) The court must start by ascertaining the possible interpretations of the provision of the Constitution, having regard not just to its text but also to its context within the Constitution as a whole. (c) The court must then ascertain the legislative purpose or object of the specific provision and the part of the Constitution in which the provision is situated. The court then compares the possible interpretations of the provision against the purpose of the relevant part of the Constitution. The interpretation which furthers the purpose of the written text should be preferred to the interpretation which does not. (i) It may be necessary to distinguish between the specific purpose of the Constitutional provision in question, and the general purpose of the part of the Constitution in which it is found. If the general purpose sheds no light on the object of a given specific provision, it may be necessary to examine the specific purpose separately. (ii) The purpose should ordinarily be gleaned from the text itself. The court must first determine the ordinary meaning of the 27

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