ASUNCION Z. JURADO, JOINED BY HER HUSBAND REX[*] A. JURADO, CATALINA Z. ALILING, JOINED BY HER HUSBAND JOSE P. O. ALILING IV, AND THE HEIRS OF FERNANDO M. ZAMORA, NAMELY: CECILIA F. ZAMORA, RAFAEL VICTOR F. ZAMORA, FRANCIS NOEL F. ZAMORA, AND CARLA MARIE F. ZAMORA, PETITIONERS, V. SPOUSES VICENTE AND CARMEN CHAI, RESPONDENTS