THE HEIRS OF EUGENIO LOPEZ, SR. NAMELY, OSCAR M. LOPEZ, MANUEL M. LOPEZ AND PRESENTACION L. PSINAKIS, PETITIONERS, VS. THE HONORABLE FRANCISCO QUERUBIN, IN HIS CAPACITY AS PRESIDING JUDGE OF THE REGIONAL TRIAL COURT OF ANTIPOLO, BRANCH 74, AND THE HEIRS OF ALFONSO SANDOVAL AND HIS WIFE ROSA RUIZ, REPRESENTED BY THEIR ATTORNEY-IN-FACT, MRS. IMELDA RIVERA, RESPONDENTS