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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def shorten_go_name_ptbl1(self, name):
 """Shorten GO name for tables in paper."""

        if self._keep_this(name):
            return name
        name = name.replace("negative", "neg.")
        name = name.replace("positive", "pos.")
        name = name.replace("response", "rsp.")
        name = name.replace("regulation", "reg.")
        name = name.replace("antigen processing and presentation", "app.")
        return name