Complex sentence: Bond locates Zao inside the clinic and attempts to kill him, but he escapes, leaving behind a pendant which leads Bond to a cache of diamonds, identified as conflict diamonds, but bearing the crest of the company owned by British billionaire Gustav Graves.
Split into simpler sentences: Bond locates Zao inside the clinic and attempts to kill him, but Zao escapes. He leaves behind a pendant which leads Bond to a cache of diamonds, identified as conflict diamonds, but bearing the crest of the company owned by British billionaire Gustav Graves.