请解释over在这里的作用Sovereign wealth funds have drawn close attention in recent years,in part due to worries in some capitals over foreign governments owning key assets.
问题描述：
请解释over在这里的作用
Sovereign wealth funds have drawn close attention in recent years,in part due to worries in some capitals over foreign governments owning key assets.
答
介词,表示：“对于”的意思