You will be shown an excerpt from a computer science scientific research paper, followed by a question about the paper. Please answer the question. Do not include any text in your response other than the answer.

Context: ML systems increasingly affect many aspects of human life, gaining trust in their decisions is a central and active re- search area. What if -questions and the centrality of concepts is the focus for this review where we examine how concepts are extracted from a neural network. We presuppose a situ- ation where a human, with domain knowledge, use concepts to answer why-questions. In our review, we use the structure of D-N explanations and three types why-questions, What if I see? , What if I do? and What if I had done? as an ana- lytic lens to deepen and detail what we can expect, and not expect, from the research reviewed.

Question: How are other questions handled?
What if -questions and the centrality of concepts is the focus for this review where we examine how concepts are extracted from a neural network. We presuppose a situation where a human, with domain knowledge, use concepts to answer why-questions. In our review, we use the structure of D-N explanations and three types why-questions, What if I see? , What if I do? and What if I had done? as an analytic lens to deepen and detail what we can expect, and not expect, from the research reviewed. No other questions are defined or handled in this paper.