Hallo, I am dealing with the sentence 彼らは自分の車を洗っています and honestly I do not understand who does 自分 make reference to. That sentence is nothing more than a caption under a picture where a group of people are washing up a car... It could be "They are washing their own car" but probably also "They are washing my car". I am really confused by the usage of 自分. I also found out this post: http://forum.wordreference.com/showthread.php?t=2238769 however I was not able to understand. Does 自分の can be used instead of 彼らの or 彼の or else 私の or あなたの ... and so on? May you help me? Thank you!