A sequence-to-sequence model is translating the source text 'The cat sat'. The model has already generated the first target token, 'Le'. To generate the second target token, what sequence of embeddings is fed into the decoder? Assume the decoder's input starts with a special token <s>, the source text embeddings are denoted by ex, and the target text embeddings are denoted by ey.

In a sequence-to-sequence model that uses a pre-trained text encoder, specific symbols are used to represent different parts of the data flow. Match each notational symbol with its correct description.

Encoder Input Notation