code: def forward(self):
      return D.Independent(
          D.Normal(self.loc, scale=self.scale),
          reinterpreted_batch_ndims=1,
      )
  
imports: import numpy
  import chainer
  import chainer.distributions
  import chainer.functions
  import chainer.links
  from chainer import reporter
label_desc: Use image node_id 2 for calling the Prior obj's underlying member method code with example usage: obj.forward() and returns: D