Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: Barcelona, Spain (CNN) Supporters of Catalan independence maintained their standoff with the Spanish government Saturday as they prepared to hold a fiercely disputed referendum. Parents occupied schools in a bid to prevent police from restricting access to their use Sunday as polling stations. Their actions came a day after huge crowds massed in Barcelona, the regional capital, for a final campaign rally by independence supporters, many waving the distinctive Catalan flag. Catalan President Carles Puigdemont gave a rousing call for people to vote despite the obstacles. "We are people who have experience with difficulties, and every difficultly makes us stronger," he said. "Friends, so that victory is definite, on Sunday, let's dress up in referendum (clothes) and leave home prepared to change history, to end the process and start progress, social progress, economic progress and cultural and national progress."Spain's central government has issued stern warnings against referendumPublic support within Catalonia for independence has become increasingly vocal as vote nears 
 Question:Many complain that _ ends up subsidizing other parts of Spain.

Catalan