Task: Question Generation
Input (English): More recently, articles in various financial periodicals, most notably Forbes magazine, have pointed to Fidel Castro, General Secretary of the Republic of Cuba since 1959, of likely being the beneficiary of up to $900 million, based on "his control" of state-owned companies. Opponents of his regime claim that he has used money amassed through weapons sales, narcotics, international loans, and confiscation of private property to enrich himself and his political cronies who hold his dictatorship together, and that the $900 million published by Forbes is merely a portion of his assets, although that needs to be proven.
Output (English): The $900 million Forbes said Castro took may only be what of his total assets?