You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Party_leaders_of_the_United_States_House_of_Representatives

Context:
The roles and responsibilities of the minority leader are not well-defined. To a large extent, the functions of the minority leader are defined by tradition and custom. A minority leader from 1931 to 1939, Representative Bertrand Snell, R-N.Y., provided this "job description": "He is spokesman for his party and enunciates its policies. He is required to be alert and vigilant in defense of the minority's rights. It is his function and duty to criticize constructively the policies and programs of the majority, and to this end employ parliamentary tactics and give close attention to all proposed legislation."

Question:
What congressman largely specified the job description of minority leader?

Representative Bertrand Snell