Section 2. Upon the erection, construction and completion of said hospital building and the leasing thereof by The General State Authority to the Commonwealth of Pennsylvania, the Department of Property and Supplies, with the approval of the Governor, is hereby authorized and directed to sublease, for the rental of one dollar ($1.00) per annum, to the Board of Trustees of Mercy-Douglass Hospital, said land and hospital building, upon such terms and conditions as shall be agreed upon.