code: def Q1(self, obs, action):
      sa = torch.cat([obs, action], 1)
  
      q1 = F.relu(self.l1(sa))
      q1 = F.relu(self.l2(q1))
      q1 = self.l3(q1)
      return q1
  
imports: import parl
  import torch
  import torch.nn
  import torch.nn.functional
label_desc: Use image node_id 3 for calling the Critic obj's underlying member method code with example usage: obj.Q1(obs, action) and returns: q1