someone

I wait for someone.

私は誰かを待ちます

I wait quietly for someone.

私は誰かを静かに待ちます

I wait quietly for someone with a blue umbrella.

私は青い傘を持った誰かを静かに待ちます

I wait quietly in front of the station for someone with a blue umbrella.

私は駅の前で青い傘を持った誰かを静かに待ちます

I wait quietly in front of the station until the agreed time for someone with a blue umbrella.

私は約束の時間まで駅の前で青い傘を持った誰かを静かに待ちます