from keras.layers import Input, Dense
from keras.models import Model
import keras
input_inner = Input(shape=(4,), name='input_inner')
output_inner = Dense(3, name='inner_dense')(input_inner)
inner_model = Model(inputs=input_inner, outputs=output_inner)
input = Input(shape=(5,), name='input')
output = inner_model(input)
model = Model(inputs=input, outputs=output)
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