Validity of a notarially executed 99 year lease : whether agent had the necessary authority to bind her principal : held that power of attorney with draft lease attached thereto duly authorised the agent to execute the lease on behalf of her principal : whether the provisions of s 3(d) or 3(e)(ii) of the Subdivision of Agricultural Land Act 70 of 1970 prohibited the conclusion of the lease : held that these provisions of Act did not find application : lease held to be valid.