Instructions: In this task, you are given a question and a context passage. You have to answer the question based on the given passage.
Input: When did mainstreaming start to happen for Ed Sheeran?, Context: Since the mid-2000s, the mainstreaming of bands like Wilco and Feist have pushed indie rock into the adult contemporary conversation. In the early 2010s, indie musicians like Imagine Dragons, Mumford & Sons, Of Monsters & Men, The Lumineers and Ed Sheeran also had indie songs that crossed over to the adult contemporary charts.
Output:
2010s