instruction:
Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.
question:
Microscopes, tools that you may get to use in your class, are some of the most important tools in biology ( Figure Microscopy is the study of small objects using microscopes. Look at your fingertips. Before microscopes were invented in 1595, the smallest things you could see on yourself were the tiny lines in your skin. But what else is hidden in your skin? Over four hundred years ago, two Dutch spectacle makers, Zaccharias Janssen and his son Hans, were experimenting with several lenses in a tube. They discovered that nearby objects appeared greatly enlarged, or magnified. This was the forerunner of the compound microscope and of the telescope. In 1665, Robert Hooke, an English natural scientist, used a microscope to zoom in on a piece of cork - the stuff that makes up the stoppers in wine bottles, which is made from tree bark. Inside of cork, he discovered tiny structures, which he called cells. It turns out that cells are the smallest structural unit of living organisms. This finding eventually led to the development of the theory that all living things are made of cells. Without microscopes, this discovery would not have been possible, and the cell theory would not have been developed. Hookes discovery of the cell set the stage for other scientists to discover other types of organisms. After Hooke, the "father of microscopy," Dutch scientist Antoine van Leeuwenhoek ( Figure 1.2) taught himself to make one of the first microscopes. In one of his early experiments, van Leeuwenhoek took a sample of scum from his own teeth and used his microscope to discover bacteria, the smallest living organism on the planet. Using microscopes, van Leeuwenhoek also discovered one-celled protists and sperm cells. Today, microscopes are used by all types of scientists, including cell biologists, microbiologists, virologists, forensic scientists, entomologists, taxonomists, and many other types. Antoine van Leeuwenhoek, a Dutch cloth merchant with a passion for microscopy. Some modern microscopes use light, as Hookes and van Leeuwenhoeks did. Others may use electron beams or sound waves. Researchers now use these four types of microscopes: 1. Light microscopes allow biologists to see small details of a specimen. Most of the microscopes used in schools and laboratories are light microscopes. Light microscopes use lenses, typically made of glass or plastic, to focus light either into the eye, a camera, or some other light detector. The most powerful light microscopes can make images up to 2,000 times larger. 2. Transmission electron microscopes (TEM) focus a beam of electrons through an object and can make an image up to two million times bigger, with a very clear image. 3. Scanning electron microscopes (SEM) allow scientists to find the shape and surface texture of extremely small objects, including a paperclip, a bedbug, or even an atom. These microscopes slide a beam of electrons across the surface of a specimen, producing detailed maps of the surface of objects. Magnification in a SEM can be controlled over a range from about 10 to 500,000 times. 4. Scanning acoustic microscopes use sound waves to scan a specimen. These microscopes are useful in biology and medical research. Scanning Electron Microscope at (5:04) Click image to the left or use the URL below. URL: 1. How is the electron beam focused? 2. What part of a specimen does a scanning electron microscope look at? 3. Why is it important that a specimen for an electron microscope be placed in a vacuum? Why is this step unnecessary for a light microscope?
answer:
who discovered single-celled protists?


question:
When the order was restored, Murad Pasha marched against Abbas I who was in Tabriz in 1610. Although the two armies met in Accay, north of Tabriz, no engagement or action took place. Due to the problems in the logistics, supply chain and the approaching winter Murad Pasha withdrew his forces to Diyarbakr. While being engaged in diplomatic correspondence with Abbas I for peace and preparing his army for another campaign at the same time he died on 5 August 1611 when he was older than 90. Nasuh Pasha was appointed as the new grand vizier and the commander of the eastern armies. He sued for peace, too, and accepted the proposal of the Safevid side in 1611. The Treaty of Nasuh Pasha was signed on 20 November 1612. The agreement secured the 1555 borders envisaged by the Peace of Amasya. Shah Abbas however, committed himself to send 200 bales of raw silk annually.
answer:
Which happened first, Murad marching against Abbas or the signing of the Treaty of Nasuh Pasha?


question:
Stu Shepard (Colin Farrell) is an arrogant New York City publicist who is contemplating cheating on his wife Kelly (Radha Mitchell). He calls Pam (Katie Holmes), a young actress, from a phone booth on a side street. When a delivery man (Dell Yount) tries to deliver a free pizza to the booth, Stu rudely dismisses him. After the phone call with Pam, the phone rings and Stu answers it. The caller (voice of Kiefer Sutherland), says that Stu should have accepted the pizza as it would have "kept his strength up for what comes next". He warns Stu not to leave the booth. Stu, again dismissive, is skeptical toward the mystery caller. The caller says that he will say 'hi' to Kelly for him, then hangs up, leaving Stu visibly concerned.The unseen man calls back and reveals that he had previously setup two other dishonest individuals in a similar situation, where he gave them a chance to redeem themselves but since both refused he had to kill them. One was a pedophile, and the other was a business executive who used inside information to cash in his stock options before the company share price collapsed (and refused the caller's request to share the proceeds with regular investors who got burned on that stock). The caller tells Stu that he must tell Kelly and Pam the truth: that he is cheating. The man calls Pam, puts Stu on speakerphone, and he tells her that Stu is married and does not want anything with Pam except to sleep with her. He then tells Stu to call his wife and tell her the truth, or else he will. Angrily, Stu does so.Before he has a chance to tell Kelly the truth, Stu is distracted by three prostitutes who want to use the phone. The prostitutes become hostile due to Stu's refusal to leave the booth, and they start banging against the glass. Stu becomes agitated and finally hangs up on his wife and yells at the prostitutes to leave him alone. As the three girls leave, the man calls and warns Stu that if he hangs up again, he will shoot him. Stu does not believe him but is convinced when the man cocks his rifle. Stu gets scared, warning him that if he shoots, the cops will arrive. However, the sniper proves him to be wrong by shooting a toy robot next to the booth without anyone noticing. The caller continues to mock Stu's faith that the caller is not capable.The situation escalates further when the prostitutes and their pimp, Leon (John Enos III), approach the booth and demand that Stu leave. Terrified that he will be shot, Stu refuses. The impasse between Stu and Leon escalates to the point of Leon breaking into the booth with a bat and attacking Stu. The sniper tells Stu he can help him and Stu says "yes". Leon is shot in the back by the sniper, horrifying the prostitutes, who accuse Stu.The police arrive and Stu is instantly the suspect. He doubts that they will find any evidence to suggest his guilt to the murder, but later finds out the sniper has planted a gun in the phone booth's roof, on top of the light panel that could be used as evidence in Leon's murder. Captain Ed Ramey (Forest Whitaker) arrives tries to negotiate with Stu to exit the booth but he says he cannot get off the call and he is talking to his "psychiatrist". Multiple news vans arrive, and reporters begin filming the situation, putting pressure on the police to deal with the situation without appearing trigger-happy. The caller continues to taunt Stu by telling him to take hold of the planted gun, or he would "Blow him (Ramey) Away!" but Stu refuses, knowing the police will likely shoot him.Kelly arrives at the scene and the sniper makes Stu confess to her about his infidelity, which Stu does. The man asks Stu to choose between Pam and Kelly, threatening to kill one of them to eliminate further temptation. The unseen caller tells Stu that there are policemen right now trying
answer:

Which actor plays the pizza delivery man's killer?


