1973 Torneo Descentralizado

Columns: Team | City | Stadium | Capacity | Field
Juan Aurich | Chiclayo | Elías Aguirre | 24,500 | Grass | León de Huánuco | Huánuco | Heraclio Tapia | 15,000 | Grass | Melgar | Arequipa | Mariano Melgar | 20,000 | Grass | SIMA | Callao | Miguel Grau | 15,000 | Grass | Sport Boys | Callao | Miguel Grau | 15,000 | Grass | Sporting Cristal | Lima | Nacional | 45,750 | Grass | Sportivo Huracán | Arequipa | Mariano Melgar | 20,000 | Grass | Unión Tumán | Tumán | Eugenio Zapata Mingoya | 8,000 | Grass | Universitario | Lima | Nacional | 45,750 | Grass

Example questions:
Between the founding dates of the 1973 Torneo Descentralizado teams Melgar and CNI , what is the founding date of the one that was founded earlier ? | Between the founding dates of the 1973 Torneo Descentralizado teams Melgar and Atlético Grau , what is the founding date of the one that was founded earlier ? | Between the founding dates of the 1973 Torneo Descentralizado teams Melgar and José Gálvez , what is the founding date of the one that was founded earlier ? | Between the founding dates of the 1973 Torneo Descentralizado teams Melgar and Deportivo Municipal , what is the founding date of the one that was founded earlier ? | Between the founding dates of the 1973 Torneo Descentralizado teams Melgar and and Defensor Lima , what is the founding date of the one that was founded earlier ?

Answers:
March 25 , 1915 | March 25 , 1915 | March 25 , 1915 | March 25 , 1915 | March 25 , 1915