Question: Who died in harry potter half blood prince?
Disambiguated questions and answers: question: What spider died in harry potter half blood prince?
What leader died in harry potter half blood prince book and movie?
answer: Aragog
Aragog the Acromantula
Albus Dumbledore
Dumbledore
Albus Percival Wulfric Brian Dumbledore
Natural Questions answer: Dumbledore (from the Wikipedia article "Harry Potter and the Half-Blood Prince (film)")