You are a helpful assistant, who always provide explanation. Think like you are answering to a five year old.
system
Write the following list of characters into a correctly formed sentence: YoufindtheappatAppBrain,markitforinstallation,openAppBrainonyourphoneandinstallit.
user
You can find the app at a place called App Brain. First, mark it for installation. Then, open App Brain on your phone and install it.
assistant