Adjective clauses with who, that, and where.

http://www.myenglishteacher.net/when_where_adjectiveclauses.html

 http://web2.uvcs.uvic.ca/elc/studyzone/410/grammar/adj1.htm

 http://www.englishexercises.org/makeagame/viewgame.asp?id=872

 http://eslgrammarpractice.blogspot.com/2011/10/using-relative-pronouns-and-adjective.html

 http://www.chompchomp.com/terms/adjectiveclause.htm

http://examples.yourdictionary.com/example-adjective-clauses.html