<prompt> Translate the following text to EnglishKisha, kwa sababu fulani - labda hatuwezi kamwe kujua kwa usahihi ni kwa nini - enzi ya trilobites, triceratops, na viumbe wengine wenye chembe nyingi ilianza.  <response>: Then, for some reason--we will probably never know precisely why--the era of trilobites, triceratops, and other multicellular creatures commenced. 