"Grandpa, someone is waiting for you to play chess." I went to him and said.

“爷爷，有人在等你下棋。”我走过去对他说。

youdao

Someone is waiting for you at home. You'd better go back right now.

你回去吧，家里有人找你。

《新英汉大辞典》

Someone is waiting for you at the school gate.

有人在学校大门口等你。

youdao

Al Masri said there is the belief among many Palestinians the peace process died a long time ago and is waiting for someone to bury it.

VOA: standard.2009.11.16

So cannibalism is morally objectionable as such so then, even on the scenario of waiting until someone died, still it would be objectionable.

这么说来食人在道德上是不能容忍的,即便是在这种只能坐以待毙的情况下，依然是不能容忍的，对吗。

耶鲁公开课 - 公正课程节选

Every 10 minutes, someone is added to the waiting list for a donated organ, according to the U.S. Department of Health and Human Services.

CNN: She donates kidney; he proposes

The reason the eye sees the flash as green, according to Dr Young, is that someone waiting to watch it will usually have been staring at the setting sun for several minutes.

ECONOMIST: In a flash

Ironically, Li says he is still waiting for that special someone to answer his advert, admitting, "the best result would be for me to find someone to marry through this".

BBC: Boyfriends for hire to beat China's wedding pressure