Task: Question Generation
Input (English): Results of the DQN-based agent are presented in fig: scenario comparison. Each plot depicts the average reward (across 5 seeds) of all representations methods. It can be seen that the NLP representation outperforms the other methods.  NLP representations remain robust to changes in the environment as well as task-nuisances in the state. 
Output (English): What result from experiments suggest that natural language based agents are more robust?