Indicate a text span in the passage about which an inquisitive question is asked. (note, don't answer the question).
Example: Sentence: The Obama administration is developing additional screening protocols for airline passengers both overseas and in the United States to control infectious diseases such as Ebola, President Barack Obama said Monday .<sep>Question: What was the duration of the Obama administration?
Example solution: Obama administration
Example explanation: It guesses the right span of the sentence where the question is from.

Problem: Sentence: HOFI , the North American holding company of Swiss concern Holderbank Financiere Glaris Ltd . , previously proposed combining its 100 % stake in St . Lawrence Cement Inc . and its 60 % stake in Dundee Cement Co . with its 67 % stake in Ideal .<sep>Question: Why are they combining their stakes?
Solution: combining