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: World leaders and the people of Oman have paid tributes to Sultan Qaboos bin Said Al Said, the Arab world's longest-serving ruler who died on Friday at 79.

Tributes pour in as Oman mourns Sultan Qaboos