What to Expect When Bart's Expecting
In the episode , Bart makes a voodoo doll of his hippie art teacher when he gets sick of art class and cast a spell to make her sick , but when he inadvertently gets her pregnant , he becomes a savior to Springfield couples trying to conceive—and is subsequently kidnapped to help conceive a thoroughbred race horse . 
<triplet> Bart <subj> Springfield <obj> residence