You will be given a definition of a task first, then some input of the task.
In this task you will be given a passage and a yes/no question based on the passage. You should answer the question using the information from the passage.

passage: The Souls series (, Soru shirizu) is a series of action role-playing video games created and developed by FromSoftware. The series began with the release of Demon's Souls for the PlayStation 3 in 2009. It was followed by Dark Souls in 2011, and its sequels, Dark Souls II and Dark Souls III, in 2014 and 2016, respectively. The series' creator was Hidetaka Miyazaki, who directed all of them with the exception of Dark Souls II.
question: is demon's souls part of dark souls?
Output:
Yes