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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 _rts_from_ra(ra, tspan, labels, block=True):
 """construct a RemoteTimeseries from a RemoteArray"""

    def _convert(a, tspan, labels):
        from nsim import Timeseries
        return Timeseries(a, tspan, labels)
    return distob.call(
            _convert, ra, tspan, labels, prefer_local=False, block=block)