Premise: Robert Lee Yates Jr. ( born May 27 , 1952 ) is an American serial killer from Spokane , Washington . From 1996 to 1998 , Yates is known to have murdered at least 13 women , all of whom were sex workers working on Spokane 's `` Skid Row '' on E. Sprague Avenue . Yates also confessed to two murders committed in Walla Walla in 1975 and a 1988 murder committed in Skagit County .
Hypothesis: Robert Lee Yates is a serial killer.
Label: ENTAILMENT