Here's a short story:

Since the 1970s, scientists have been searching for ways to connect the brain with computers. Braincomputer interface(BCI) technology could help people with disabilities send commands to machines. Recently, two scientists, Jose Millan and Michele Tavella from the Federal Polytehnic School in Lausanne, Switzerland, show a small robotic wheelchair directed by a person's thoughts. In the laboratory, Tavella operated the wheelchair just by thinking about moving his left or right hand. He could even talk as he watched the vehicle and guided it with his thoughts. "Our brain has billions of body cells . These send signals through the spinal cord to the body part to give us the ability to move. But spinal cord injuries or other conditions can prevent these weak electrical signals from reaching the body part." Tavella says. "Our system allows disabled people to communicate with outer world and also to control machines." The scientists designed a special cap for the user. This head cover picks up the signals from the scalp and sends them to a computer. The computer finds meanings of the signals and commands the wheelchair with an engine. The wheelchair also has two cameras that tell objects in its path. They help the computer react to commands from the brain. Prof. Millan , the team leader, says scientists keep improving the computer software that finds meanings of brain signals and turns them into simple commands." The practical possibilities that BCI technology offers to disabled people can be grouped in two kinds: communication, and controlling objects. One example is this wheelchair." He says his team has set two goals. One is testing with real patients, so as to prove that this is a technology they can get advantages from. And the other is sure that they can use the technology for long. (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: Scientists have been searching since what year?
Guess: the 1970s

Question: To find what?
Guess: how to connect brain to computers

Question: Which technology could help people with disabilities?
Guess: Braincomputer interface

Question: Jose Milan and Michele Tavella are from what school?
Guess: Federal Polytehnic School

Question: Located in?
Guess: Lausanne, Switzerland

Question: A small robotic what can be directed by a person's thoughts?
Guess: wheelchair

Question: Where did Tavella test it?
Guess: with real patients

Question: He could even do what as he watched the vehicle?
Guess: talk

Question: Our brain has billions of what?
Guess: body cells

Question: That send signals through what?
Guess: the spinal cord

Question: To give the ability to what?
Guess: move

Question: What can prevent electrical signals?
Guess: spinal cord injuries

Question: Scientists designed a special what?
Guess: cap

Question: Which picks up what?
Guess: signals from the scalp

Question: Then sends them to?
Guess: a computer

Question: Which finds meanings of what?
Guess: the signals

Question: The wheelchair also has how many cameras?
Guess: two

Question: Which do what?
Guess: help the computer

Question: What two groups of technology  can BCI technology offer?
Guess: communication, and controlling objects

Now answer the following question in the same format.

Question: How many goals have been set?

two