What is the fine-grained topic of the following text: Big Brother Brazil 18 is the eighteenth season of the reality show Big Brother Brazil that will be displayed by Rede Globo from January 22, 2018, which will end on April 19 of that year, debuting for the third time in the history of the program on a Monday and ending the third time on a Thursday. Only return the topic.
The eighteenth season of Big Brother Brazil reality show.