HEIRS OF VALERIANO C. DELA CORTA, SR., NAMELY: PEDRO C. DELA CORTA, VALERIANO C. DELA CORTA, JR., ROBERTO C. DELA CORTA, TEMOTEO C. DELA CORTA, EMMA C. DELA CORTA, ANITA C. DELA CORTA, ADELAIDA D. OTERO, AND ALEJANDRA COSE DELA CORTA FOR HERSELF, ALL REPRESENTED BY PEDRO C. DELA CORTA, PETITIONERS, V. REBECCA ALAG-PITOGO, REPRESENTED BY OSCAR PITOGO, RESPONDENT