You will be given a definition of a task first, then some input of the task.
In this task, you will be shown an extract from a movie plot. You need to read the extract and create questions that can be answered from the extract. The questions should be well-formed and grammatically correct. The questions should be completely answerable from the given passage and should not require any external knowledge. Subjective questions are not allowed. Create questions that result in factoid answers. A simple rule of thumb to decide whether a question is factoid or not is to see if two different people with average reading/comprehension skills would come up with the same answer after reading the passage.

The film takes place in an unidentified city (presumably New York City) in the modern day, and follows the characters of Rufus King (Thomas Downey) and Jacob Van Helsing (Rhett Giles), both of whom have been observing recent attacks made upon young teenagers in the city at night. Van Helsing correctly identifies that the attacks are being made by a group of vampires residing in the city. The vampires are led by a foreign seductress named Countess Bathorly (Christina Rosenberg), who hopes to use the humans to feed her growing vampire clan and to eventually seize control of the city, while at the same time using her growing power to gain the powers of "the Master". Discovering Bathorly's plan, Van Helsing and King begin to hunt down and destroy the vampires one by one, until they finally face the Countess herself and try to kill her once and for all, before her evil consumes the city and allows Dracula's curse to consume the human race.
Output:
Who have been observing recent attacks made upon young teenagers in the city at night?