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:
United_Methodist_Church

Context:
Members of the United Methodist Church who identify with the pro-life position have organized into the Taskforce of United Methodists on Abortion and Sexuality (TUMAS) to further their position within the denomination. There was an attempt to withdraw the United Methodist Church membership in the Religious Coalition for Reproductive Choice at their General Conference, held in May 2012, with a petition that passed through the legislative subcommittee and committee votes, but was not given a floor vote. Rev. Paul T. Stallsworth, president of the Taskforce of United Methodists on Abortion and Sexuality said he "had every reason to believe" that pro-life delegates would have won a floor vote.

Question:
In what year was there an attempt to withdraw the UMC membership?

2012