What is the fine-grained topic of the following text: The total paid in that transaction was never made public, but some simple digging reveals that Sberbank loaned Energia 2.9 billion roubles ($96.5 million) in 2008 and later advanced sums of 5.8 billion rubles and 12.4 billion roubles. Only return the topic.
Sberbank's loans to Energia