Ann Cristine is having nightmares for several rights. She remembered that her friend, Gemmabel, gave her an advice of putting something on her window to protect her from nightmares and filter her dreams. However, she can't remember what that thing is being called. To help Ann recall the name of that thing perform the indicated operations and simplify the result if you will be able to correctly connect the dots beside the other dot(s), then you could give her a hint Write the name of this thing after connecting the final pair of dots.
