f the Landlord at the Landlord's head office as specified in Item 1 of the Term Sheet and to the address set out in Item 1 of the Term Sheet and if to the Tenant, so given to the Tenant personally (or to a partner or officer of the Tenant if the Tenant is a firm or corporation) at the address specified in Item 2 of the Term Sheet or left at the Leased Premises (whether or not the Tenant has de