Task: Question Answering
Input (English): Passage: The Christians lost 12,000, 23,000 or 30,000 men, while the Ottomans suffered 20,000-30,000 casualties. 
Question: How many is the difference between the minimum amount of men the Christians lost vs the maximum amount of men the Ottomans lost? 
Answer type: Number 
Output (English): 18000.