before_sent:  Text attribute transfer is one of the most important NLG tasks, which aims to control certain attributes that people may expect the texts to possess , such as sentiment, tense, emotion, political position, etc .
before_sent_with_intent: <clarity>  Text attribute transfer is one of the most important NLG tasks, which aims to control certain attributes that people may expect the texts to possess , such as sentiment, tense, emotion, political position, etc .
after_sent:  Text attribute transfer is one of the most important NLG tasks, which aims to control certain attributes in the generated text , such as sentiment, tense, emotion, political position, etc .