Teacher:In this task, you will be given a passage, a question and a list of single-word events identified from the passage. The goal is to point out all events from the given event list that can answer the question. If a question is unanswerable or none of the events answer the question, output should be empty.
Teacher: Now, understand the problem? Solve this instance: Passage: More recently it has followed the growth of the militia movement and church groups that preach a message of white supremacy and anti-semitism. The new study written by Mark Potach, who edits the Southern Poverty Law Center's Intelligence Report, warns that such groups grew rapidly last year, mostly by recruiting younger members. Question: What happened after the study written by Mark Potach? Events: ['growth', 'movement', 'preach', 'study', 'edits', 'warns', 'grew', 'recruiting']
Student:
warns