title: AttributeError: 'Tensor' object has no attribute 'Activation'
body: <p>I am building a chatbot. While specifying the activation function from keras, I am getting an attribute error as &quot;AttributeError: 'Tensor' object has no attribute 'Activation'&quot;</p>
  <pre><code> input_sequence = Input((max_story_len,))
   question = Input((max_question_len,))
   # INPUT ENCODER M
   input_encoder_m = Sequential()
   input_encoder_m.add(Embedding(input_dim = vocab_size, output_dim=64))
   input_encoder_m.add(Dropout(0.3))
   # INPUT ENCODER C
   input_encoder_c = Sequential()
   input_encoder_c.add(Embedding(input_dim = vocab_size, output_dim=max_question_len))
   input_encoder_c.add(Dropout(0.3)) 
   question_encoder = Sequential()
   question_encoder.add(Embedding(input_dim = vocab_size, output_dim=64, 
   input_length=max_question_len))
   question_encoder.add(Dropout(0.3))
  
   input_encoded_m = input_encoder_m(input_sequence)
   input_encoded_c = input_encoder_c(input_sequence)
   question_encoded = question_encoder(question)
   match =dot([input_encoded_m, question_encoded], axes= (2,2))
   match.Activation('softmax')(match)
  </code></pre>