You are given a code:

def main_solution(x):
    return ('qfmcc' + 'wnsb')

Can you predict the output of `main_solution("sjpm")` without writing any code? Please reason and put your final answer in the following json format: {"output": <your output>}, where <your output> should be the final string.
user
{"ref_input": {"x": "sjpm"}, "ref_output": "qfmccwnsb", "ref_code": "def main_solution(x):\n    return ('qfmcc' + 'wnsb')", "funcname": "main_solution"}
rule