Definition: In this task, you need to generate an appropriate title for the given summary of some paragraph. The generated title must be short and should include the main topic of the given text. Your summary should be less than 20 words long.
Input: The hashtag #SaveDippy's been trending on Twitter after London's Natural History Museum announced it was moving its skeleton of a Diplodocus from the museum's entrance.

Diplodocus v blue whale: How they stack up in numbers