Interpretation of taxing statues-Strict interpretation-Where words are plain and unambiguous, court bound to give effect to their plain meaning-Whether language is “plain and unambiguous” to be determined within context-Legislative intent-Crucial where language is ambiguous and capable of multiple constructions-Legislative purpose primarily to be gathered from specific words used by Legislature-Where language plain and unambiguous, court cannot read words into statute on notion that they would better serve legislative purpose-Aids to construction-Memorandum Explaining Provisions of Bill can be used to derive meaning of provision.[S.44C, 37 (1)]