What follows is an opinion from the Supreme Court of the United States. Your task is to identify the disposition of the case, that is, the treatment the Supreme Court accorded the court whose decision it reviewed. The information relevant to this variable may be found near the end of the summary that begins on the title page of each case, or preferably at the very end of the opinion of the Court. For cases in which the Court granted a motion to dismiss, consider "petition denied or appeal dismissed". There is "no disposition" if the Court denied a motion to dismiss.

Opinion:
CORY et al. v. WESTERN OIL & GAS ASSN. et al.
No. 84-16.
Argued February 26, 1985
Decided March 27, 1985
Dennis M. Eagan, Deputy Attorney General of California, argued the cause for appellants. With him on the briefs were John K. Van de Ramp, Attorney General, and N. Gregory Taylor, Assistant Attorney General.
Philip K. Verleger argued the cause for appellees. With him on the brief was John P. Zaimes.
A brief of amici curiae urging reversal was filed for the City of Santa Monica et al. by Robert M. Myers, Karl M. Manheim, Bert Glennon, Jr., and Stanley E. Remelmeyer.
Per Curiam.
The judgment is affirmed by an equally divided Court.
Justice Powell took no part in the decision of this case.

Question: What is the disposition of the case, that is, the treatment the Supreme Court accorded the court whose decision it reviewed?

Choices:
stay, petition, or motion granted
affirmed (includes modified)
reversed
reversed and remanded
vacated and remanded
affirmed and reversed (or vacated) in part
affirmed and reversed (or vacated) in part and remanded
vacated
petition denied or appeal dismissed
certification to or from a lower court
no disposition

Answer: 1