<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def serialized(self, prepend_date=True):
 """Return a string fully representing the fact."""

        name = self.serialized_name()
        datetime = self.serialized_time(prepend_date)
        return "%s %s" % (datetime, name)