OPINION — AG — ** MEMORANDUM * EDUCATIONAL TELEVISION — BONDS ** OKLAHOMA EDUCATION TELEVISION AUTHORITY TO ISSUE BONDS — TRUSTS CITE: 64 O.S. 371 [64-371], 70 O.S. 2141 [70-2141], 70 O.S. 2144 [70-2144], 70 O.S. 2149 [70-2149], ARTICLE XI, SECTION 1 (JAMES C. HARKIN)