Before revision:  First, we argue that it is important to adopt a broader perspective on automatic summarization . Based on our findings, we illustrate how we can expand our view when it comes to the types of input materialthat is to be summarized , the purpose of the summaries and their potential formats.
After revision:  First, the educational domain requires a broader perspective on automatic summarization . Based on our findings, we illustrate how we can expand our view when it comes to the types of input materialthat is to be summarized , the purpose of the summaries and their potential formats.