Task: Instance Class Understanding (ontology: Arts_Media_Entertainment/Propp)

Which of the following classes does '"Ungrateful Jew steals horse of Christian who has lent it to him."' belong to? Context: "Terminal motif W154.19"

A. "False modesty."
B. "Eagerness for combat."
C. "Loyalty."
D. "Ingratitude."

Answer: "Ingratitude."