In this task, you will be presented with a context from an academic paper and a question based on the context. You have to classify the questions into "Extractive", "Abstractive", or "Yes-no" questions. Extractive questions can be answered by concatenating extracts taken from a context into a summary while answering abstractive questions involves paraphrasing the context using novel sentences. Yes-no question is a question whose expected answer is one of two choices, one that affirms the question and one that denies the question. Typically, the choices are either yes or no.

Input: Consider Input: We cluster the embeddings with INLINEFORM0 -Means.  
 Question: How were the cluster extracted? 

Output: Abstractive


Input: Consider Input: We employ precision, recall, F1 and accuracy for evaluation metrics. 
 Question: what evaluation metrics are reported?

Output: Extractive


Input: Consider Input: . This work can be extended to predict future events with one day in advance, where we will use the same method for feature selection in addition to to time series analysis of the historical patterns of the word-pairs. 
 Question: Do the authors suggest any future extensions to this work?


Output: Yes-no