ऐसा अनुसंधान जो केवल एक बार की गैर-पुनरावृत्ति समय अवधि तक सीमित होता है, संरचनात्मक रूप से कहलाता है:

The 'Drain of Wealth' theory was propounded by which Indian nationalist leader?

Which event is considered the turning point in Mahatma Gandhi's leadership in the Indian independence movement?

Which African leader is known for his non-violent opposition to colonial rule?