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: "Duerme Negrito is a popular Latin American folkloric lullaby, originally an area near the Venezuelan and Colombian border, the song was popularized by himself and other musicians, such as Mercedes Sosa, sometimes known as La Negra, was an Argentine singer, who was popular throughout Latin America and many countries outside the region, and was born, on which holiday?" whose answer is Argentina's Independence Day.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Mercedes Sosa birth date
Useful Output:

Doc 1: Born to a poor, working-class family on July 9, 1935, in San Miguel Tecumán, Sosa started her singing career at age 15. Of Quechua ancestry,
Doc 2: Born on July 9, 1935 in the northern Argentine province of Tucumán, Mercedes Sosa's family lineage came from the indigenous Aymara people.
Doc 3: Mercedes Sosa (born 9 July 1935, died 4 October 2009 in Buenos Aires) was an Argentine singer inmensely popular throughout Latin America.
Doc 4: Childhood and family of Mercedes Sosa​​ Haydée Mercedes Sosa was born on July 9, 1935 in the city of San Miguel de Tucumán. Her father was a
Doc 5: Mercedes Sosa, or better known as La Negra, was an Argentine singer who was popular throughout Latin America. With her roots in Argentine folk