Complex sentence: María Antonieta Pons is the first major rumbera of the Mexican Cinema, therefore, considers Orol one of the main promoters called Rumberas film of the forties and fifties.
Split into simpler sentences: María Antonieta Pons is the first major rumbera of the Mexican Cinema. By this, Orol was considers one of the main promoters called Rumberas film of the forties and fifties.