Container of the best seats (3)
I believe the answer is:
box
This might be a double definition.
'container' is the first definition.
(box is a kind of container)
'best seats' is the second definition.
'box' can be an answer for 'seats' (box seat is a kind of seat). I am not certain of the 'best' bit.
'of the' is the link.
Can you help me to learn more?
(Other definitions for box that I've seen before include "Wooden case" , "Fight; tree; container" , "Spar; tree" , "Topiary shrub" , "Tackle defender" .)