<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def from_dict(cls, copula_dict):
 """Create a new instance from the given parameters. Args: copula_dict: `dict` with the parameters to replicate the copula. Like the output of `Bivariate.to_dict` Returns: Bivariate: Instance of the copula defined on the parameters. """

        instance = cls(copula_dict['copula_type'])
        instance.theta = copula_dict['theta']
        instance.tau = copula_dict['tau']
        return instance