(CNN) -- All big ideas start small, and Calle 13 -- a wildly popular alternative urban band from Puerto Rico -- is no exception.

Its members, Rene Perez, who goes by "Residente," and Eduardo Cabra, "Visitante," are stepbrothers. When their parents divorced, Cabra would visit Perez at his father's house on 13th Street, or Calle 13.

He was required to identify himself to enter, as either a resident, "residente" or visitor, "visitante," in Spanish.

The names stuck.

"Later, it took on another meaning, with the question of whether immigrants are residents or visitors," said Perez, who along with Cabra, recently sat down to talk with CNN en Espanol's Claudia Palacios. "But that was how it started."

Neither brother could have imagined then what Calle 13 would become -- one of the most highly praised and talked-about groups to come out of Latin America in years. It has won more than 20 Grammys and moved beyond its reggaeton roots to include instruments and sounds from all over the region, winning critical and popular praise in the process.

Though raunchy, the group's lyrics are often hard-hitting on social issues, and Perez is particularly well-known for being outspoken about poverty, Puerto Rican independence and education.

Asked how he views his career now, Perez said he's matured and made some adjustments so that people can better hear and understand his message.

"I liked to use bad words," said Perez, who raps and writes the group's lyrics. "Because it seemed to me it gave a reality that's missing in music."

Based on the article and the following list of answers, write a list of questions.

1. Puerto Rico
2. small
3. no
4. They are stepbrothers
5. Cabra
6. CNN en Espanol
7. More than 20
8. no
9. (CNN)
10. Alternative
11. Resident
12. Visitor
13. yes
14. social issues
15. It has matured
16. so that people can better hear and understand his message.
17. Perez
18. yes

Numbered questions:
1. Where is Calle 13 from?
2. How do all big ideas start?
3. Are the members cousins?
4. What is their relationship?
5. Who was required to identify himself as a visitor or resident?
6. Who does Claudia Palacios work for?
7. How many grammy's has the group won?
8. Does the group always have wholesome lyrics?
9. Where was this article published?
10. What type of band is Calle 13?
11. What does Residente mean in English?
12. What does Visitante mean in English?
13. Is the group well known in Latin America?
14. What kind of issues does the band address?
15. How does Perez describe his career now?
16. Why did the band make adjustments?
17. Who writes the groups lyrics?
18. Does he rap also?