Please answer the following question: Generate a question about the following movie plot: Mariana (Mendoza) is a Colombian immigrant who has recently traveled to New York with her two children, 10-year-old Gabriel (Sebastian Villada Lopez) and 6-year-old Andrea (Laura Montana Cortez) in order to be reunited with her husband Antonio (Andres Munar). However, one day Antonio leaves his family after announcing that he has found work in Miami, and it soon becomes apparent to Mariana that he does not intend to return. Seeing this, she sets out with her children onto the streets of Queens in an attempt to scrape together a decent living. When selling her homemade empanadas fails to bring in any money, Mariana and the children begin collecting aluminum cans off the city's streets. Complications arise, and soon the family finds itself in a desperate day-to-day struggle for survival.[3] The film is a semi-autobiographical tale based on the arrival of Mendoza's own mother to the United States;[3] however, this fact is not revealed to the audience until a post-film sequence immediately before the credits roll.[4]
A:
What do Mariana and her children do to provide for themselves?