An independent clause is found in a compound sentence and occurs when each clause can operate as a complete sentence in it's own right.
A subordinate clause adds information but does not serve as a sentence in it's own right for example, it relies on the main clause within the sentence to make sense.
The sentence you construct would be a compound sentence and would read:
The journalist met a source at the hotel SO THAT he would get the facts for an article.
when is it due? :) so I can write it for you do I start now or later?
Karen was disdaining her thoughts on the political debate.
(Now that I have answered your question can you help me with my current one. Its the most recent one on my profile page thing.)