def gen_sum(document, words=12):
    return " ".join(document.split()[:words])

74ce2bf32fd939f4a66f8ccfbb24356cd56abf0c
<mask token>

def gen_sum(document, words=12):
    return ' '.join(document.split()[:words])

def gen_sum(document, words=12):
    return " ".join(document.split()[:words])
