Section 6(4) of the Principal Act is amended as follows:(a) by omitting from paragraph (c) "land." and substituting "land; and" ;(b) by inserting the following paragraph after paragraph (c) :(d) the Commissioner is satisfied that the person, by reason of his or her ownership of 50% or more shares in another company, does not have another principal residence situated on other land which (i) is beneficially owned by that other company; and(ii) has been determined under this subsection to be principal residence land.