In this task, you are given a sentence in the Spanish language. Your task is to translate the Spanish sentence into the English language.

Input: Consider Input: En cual de los farmacos con actividad antiviral aparece la base purica denominada guanina?

Output: In which of the drugs with antiviral activity does the purine base called guanine appear?

Input: Consider Input: En fibras musculares lisas

Output: In smooth muscle fibers

Input: Consider Input: Para que una traccion esqueletica sea eficaz, los principios que debe cumplir son
Output: For a skeletal traction to be effective, the principles that must be met are