You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "when was africa had famines in the past?" whose answer is 1738–56.
Each document should contain about 30 words, and these documents should contain useful information.

Query: major famines in african history
Useful Output:

Doc 1: The Tigray famine is the second largest in the history of Ethiopia, following the 2011 East Africa drought, during which millions of people went
Doc 2: In 2011, Somalia suffered a famine that killed 260,000 people in south and central regions. The famine was declared in July, but most people had
Doc 3: The Worst Droughts And Famines In History. Weird History•156K views  Make Afrika Great New 13K views.
Doc 4: 1967-1970: The Biafran Famine · 1974: Bangladesh · 1975-1979: The Khmer Rouge Famine · 1980-1981: The Karamoja Famine · 1982-1985: The Mozambican
Doc 5: That year more than 30 African countries experienced famine and death by starvation. Somalia, Eritrea, and Ethiopia had the highest rates of