before_sent:  In this paper, we present Generation-Augmented Retrieval (GAR) , a query expansion method that augments a query with relevant contexts through text generation  .
before_sent_with_intent: <clarity>  In this paper, we present Generation-Augmented Retrieval (GAR) , a query expansion method that augments a query with relevant contexts through text generation  .
after_sent:  In this paper, we present Generation-Augmented Retrieval (GAR) for answering open-domain questions, which augments a query with relevant contexts through text generation .