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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 from_dict(cls, d):
 """Instantiate a Predicate from a dictionary representation."""

        synopses = [tuple(map(Role.from_dict, synopsis))
                    for synopsis in d.get('synopses', [])]
        return cls(d['predicate'], tuple(d['parents']), synopses)