When paraphrasing or summarizing, you should use all of the following key words to guide you except one. which one should you not use

is that lennie, a man with a mental disability, is treated poorly due to his mental disability

the sentence that avoid faulty coordination is:

culture, which is well represented in philadelphia, plays a major role including theatre, music, and the visual arts.  

faulty coordination occurs when the writer gives equal importance two different ideas (clauses) which in fact are not equivalent. in order to correct a misplaced clause or idea, the writer can place less important or emphatic ideas in a relative clause as in the previous sentence.