Identify whether the following group of words is phrase or clause:
under the tree
This group of words is a...
A)phrase
B)clause

Last night, my mother gave my huge dog Simon a bone after he behaved very well with our guests. However, he did not feel like eating it at that moment, so he found a place in the garden, dug the earth and buried it in the darkness. The next day, Simon wanted to eat his bone for breakfast, but he did not remember where exactly he had buriedit! Besides, the earth of the garden was being moved too to grow vegetables, so he ended up digging and making holes in the whole garden for hours. Finally, the bone was waiting for him next to a lemon tree.