Yusuf is taller than tolu
This means that Yusuf's height is greater than Tolu's height.
To determine whether Yusuf is taller than Tolu, you would need to compare their heights. If you have access to their actual heights, you can simply compare the numbers to see who is taller.
If you don't have their heights, you can ask them directly or find a reliable source that provides this information. You could also gather observations from people who have seen both Yusuf and Tolu and ask them for their opinions on who is taller. It's important to consider the source of information and its reliability in order to make an accurate determination.