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: "Which county that has Santiago Daniel Martinez Roa as a player is sometimes referred to as "Corazón de Sudamérica"?" whose answer is Paraguay.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Santiago Daniel Martinez Roa nationality
Useful Output:

Doc 1: Santiago Martinez. Summary · Matches. Passport. First name: Santiago Daniel; Last name: Martinez Roa; Nationality: Paraguay; Date of birth: 16 August 1995; Age
Doc 2: Control Number. Requester Name. Trk Scanned. Created. Subject. NRC2018071994. Klein, Bart. 2. 05/02/2018. 05/16/2018.
Doc 3: Profesional con sólida trayectoria en administración, logística y gerencia comercial, comprometido con el éxito organizacional. Experto en la atención al
Doc 4: Born in 15/08/1995, Santiago Roa is 25 years old, and plays as midfielder for Vllaznia Shkodër. The paraguayan player is -1 cm tall and weighs -1 kilos. Here
Doc 5: Santiago Daniel Martinez Roa was born in Limpio, Paraguay. Nationality(ies): Paraguay. How old is Santiago Daniel Martinez Roa? Santiago Daniel Martinez Roa has