Sentence:  The opening <WSD>paragraph</WSD> of the chapter titled The Theory Of Representative Perception , in the book Philosophies Of Science by Albert G. Ramsperger says , `` passed on to the brain , and there , by some unexplained process , it causes the mind to have a perception '' . 
Meaning of the word marked with <WSD> tags:  one of several distinct subdivisions of a text intended to separate ideas; the beginning is usually marked by a new indented line