The declaration of trust in the present case is an instrument which declares that the property to which it refers shall be held in trust for the person mentioned therein. In my opinion the property as to which that declaration is made is property "to be vested" in D.K.L.R. within the meaning of those words in par. 2. The argument on behalf of D.K.L.R. was that the words "to be vested" only apply when there is a legal obligation on the part of some third party to vest the property in the trustee, or a legally enforceable right or power in the trustee to have the property vested in himself. This was the view which Sheppard J. took in Nev. Ham Nominees Pty. Ltd. v. Commissioner of Stamp Duties [1] and in the present case, and which was accepted by Mahoney J.A. (dissenting) in the present case. The words "to be", before a past participle, and used in relation to a noun, can express obligation, intention, possibility or simple futurity; the sense must in every case depend on the context in which the words appear. With all respect to those who take the contrary view, I can see nothing in the context of par. 2 to suggest that the words "to be vested" connote an obligation on the part of a third party to vest the property or a right in the trustee to have it vested. In par. 2 the contrast between "vested" and "to be vested" suggests that it is intended to refer both to property which at the date of the instrument is vested in the person executing it and to property which, although not presently vested, becomes vested in that person in the future. The instrument described is one by which the person executing it declares that the property comprised in it, if presently vested, is held on trust and, if not presently vested, will be held on trust when it becomes vested. The words "shall be vested" in this context indicate mere futurity, although the very fact that a declaration of trust is made in respect of property not yet vested suggests that there exists an expectation, if not an intention, that it will become vested. The declaration of trust in the present case seems exactly the sort of instrument described by par. 2 in its application to property to be vested. It was argued that to construe the paragraph in this way would render it uncertain in that it is not clear what is "to be vested", and unjust, in that duty would be charged on an instrument which might never take effect, because the property referred to might never become vested. No uncertainty seems to me to result from the construction which I favour. On any view there must be property "comprised in the instrument". That property must be identifiable or ascertainable. An instrument which declares a trust in respect of property which, although not presently vested in the person executing the instrument, can be identified or ascertained, seems clearly to satisfy the words of par. 2, but is not rendered uncertain by the fact that the property is not vested in the declarant. It does not seem to me that injustice is any more likely to result from this construction than from any other. It is hardly likely that many persons will execute declarations of trust in respect of identifiable or ascertainable property not yet vested in them without having a reasonable expectation that the property will become vested. Although it may happen that such an expectation may be defeated in a particular case, it may equally happen that the property may not become vested even though there was a legal obligation to vest it, for not all obligations are satisfied and not all rights can be enforced. It does not seem to me necessary to consider whether, under s. 15 of the Act and reg. 30 of the Regulations thereunder, an allowance for "spoiled stamps" might be made when duty had been paid in respect of a declaration of trust which failed in its intended operation because the property "to be vested" never became vested.