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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 hybrid_forward(self, F, sentence1, sentence2):
 """ Predict the relation of two sentences. Parameters sentence1 : NDArray Shape (batch_size, length) sentence2 : NDArray Shape (batch_size, length) Returns ------- pred : NDArray Shape (batch_size, num_classes). num_classes == 3. """

        feature1 = self.lin_proj(self.word_emb(sentence1))
        feature2 = self.lin_proj(self.word_emb(sentence2))
        if self.use_intra_attention:
            feature1 = F.concat(feature1, self.intra_attention(feature1), dim=-1)
            feature2 = F.concat(feature2, self.intra_attention(feature2), dim=-1)
        pred = self.model(feature1, feature2)
        return pred