You will be given a definition of a task first, then some input of the task.
In this task, you get an English sentence and a corresponding Spanish translation of the English sentence. Your task is to return a "Yes" if the translation is correct, otherwise return "No"

English: The application of the provisions of the directive concerning the performance of services in the field of investments in securities, better known as ISD, is therefore unnecessary and could lead to difficulties or confusion.
Spanish:Por todo ello, no es necesario que se apliquen las disposiciones contempladas en la directiva relativa a la realizacion de servicios en el ambito de las inversiones en valores mobiliarios, mas conocida como ISD, puesto que pueden plantear problemas o crear confusion.
Output:
Yes