Instructions: This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.
Input: As of June 2012[update], Pakistan's electricity problems were so severe that violent riots were taking place across Punjab. According to protesters, load shedding was depriving the cities of electricity 20–22 hours a day, causing businesses to go bust and making living extremely hard. Gujranwala, Toba Tek Singh, Faisalabad, Sialkot, Bahawalnagar and communities across Khanewal District saw widespread rioting and violence on Sunday 17 June 2012, with the houses of several members of parliament being attacked as well as the offices of regional energy suppliers Fesco, Gepco and Mepco being ransacked or attacked.
Output:
What kind of problem caused riots in June 2012?