Conclusions:     A simple system features
	Concept Link: new way to calculate sentence similarity; n no chunker/parser involved n concept differs from NPs in Lexical Chain Considering sentence similarity/relatedness via Concept Link: n Alleviate the influence of expression variations; (but might involve inaccurate sense guess) n Outperforms Word co-occurrence approach Minimizing Redundancy via Modified MMR; No extra heuristics involved.