'She's getting on the tube.'
'She's sitting at seat No.8.'
'She's sitting at the bus stop.'
'He is getting off the bus at the bus stop.'
I'm in Gifu.
you are always in my heart.
'There is a man by the car.'
'These people are standing in the stadium.'
'(Those/The) Women are at home/their houses.'
'They are getting off the tube.'
'A man is behind the car.'
use "ni imasu" examples Tokyo ni imasu, ( I am in Tokyo) nihon ni imasu (I am in Japan)
'Doko ni imasu' means 'where am i' 「どこにいます」
'He is getting off the tube.'
(自分の)ベッドの上に座っています ([jibun no] beddo no ue ni suwatte imasu) translates to "I am sitting on my bed". 自分 is in brackets because it is not entirely necessary, unless you would like to emphasize the fact that you're sitting on your own bed.