I think e I don't think non vengono mai usati da soli, ma vengono sempre seguiti da so, come nell'esempio, o da una proposizione come nel caso di I think/I don't think he went to the concert.
The symbol of the Italian Republic consists of a star (representing Italy) on top of a cog (symbolizing work), with an olive branch (symbolizing peace) on one side and an oak branch (symbolizing strength and dignity) on the other, tied together by a scroll bearing the words Repubblica Italiana.