He enters the room, unlocking the door by means of one of the other doorkeys ”they were all much alike. 
He enters the room after unlocking with one of the keys.
He could not enter the room despite having one of the doorkeys.
The Chinese has no influence.
A horse stands by himself.
As the number of sites rose, the database got much larger.
A writer puts him as an efficient ethnic cleanser.
The BMX rider is very daring.
A woman is outdoors.