Cual es el antecedente de esta noticia. El exceso de velocidad y el mas estado de los neumaticos volvieron a enlutar a varias familias costeñas ,luego de que dos buses de la misma empresa COATUR chocaron de frente en la madrugada de ayer causando la muerte de 16 personas y 48 heridos. Uno de los pasajeros dijo que el chofer del micro en el que viajaba se quedo dormido por cuanto empezo a "serpentar" en la via. Pero otrod testimoniaron que los vehiculos eran conducidos con exceso de velocidad

Explanation:do you mean  What is the antecedent of this news. Speeding and the state of the tires returned to mourning several coastal families, after two buses from the same company COATUR collided head-on in the early hours of yesterday causing the death of 16 people and 48 injuries. One of the passengers said that the driver of the bus in which he was traveling fell asleep because he began to "snake" on the road. But another testified that the vehicles were driven with excessive speed

what sentences? what words?