Radiant Spirits Mission: Scavenger hunt 3

Radiant Spirits Mission: Scavenger Hunt (Riddle 3)
The final riddle and apparently the most complex one was then  posted in the bulletin board and finally then it said: A lovely little gift, with thankfulness imbued. If given one of these, it's a sign you have one's gratitude. And of course both Spencer and Sugar Cane thought it was the time for Theodore to answer this one. Theodore of course tried his best to make sure he got the correct answer.
“… … Shaymin…” said Theodore after thinking everything through.
“The legendary grass Pokemon? Why would it be him?” asked Spencer, a bit puzzled.
“Because of the item it leaves…” said Theodore. “The soothe bell as it boost the friendship… Even if I got it wrong, it would be a nice secondary prize for us”
“I guess so, so you know where have you seen this soothe bells?” asked Sugar Cane. Theodore surprisingly nodded since it was some kind of thing that he heard in the middle of a lake not too long ago. They all went towards the lake Theodore mentioned. They saw something shining from the middle island of it. Theodore simply flied towards it and reached it in no time. Again it was pretty easy for being a legendary item I mean if it could be considered like that. Either way they brought the Soothe Bell back. And all that remained was to get the answers to see if their answers were correct.