FILOMENA LAZAGA, HEIRS OF MAMERTO AGABAS, NAMELY: NATIVIDAD AGABAS, ERNESTO AGABAS, HEIRS OF DOMINGA LUCENA, NAMELY: ARMANDO LUCENA, HELENITA LUCENA AND ALEXANDER LUCENA, FOR THEMSELVES AND ALSO AS HEIRS OF LORETA SAYDOQUEN, PETITIONERS, VS. SPOUSES CORAZON ARCANO AND FELIAS ARCANO, RESPONDENTS