TASK DEFINITION: In this task, You are given an open-domain question that can be answered based on factual information. Your task is to provide \*short\* answer (in a few words only) for the given question. The short answer can be one or more entities or it can also be boolean \*yes\* or \*no\*.
PROBLEM: repetitive dna at the end of a eukaryotic chromosome

SOLUTION: Telomeres

PROBLEM: who's the lead singer of the doobie brothers

SOLUTION: Tom Johnston

PROBLEM: who played anakin in revenge of the sith

SOLUTION:
Hayden Christensen