This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.
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Question: Passage: Antibiotics are screened for any negative effects on humans or other mammals before approval for clinical use, and are usually considered safe and most are well tolerated. However, some antibiotics have been associated with a range of adverse side effects. Side-effects range from mild to very serious depending on the antibiotics used, the microbial organisms targeted, and the individual patient. Side effects may reflect the pharmacological or toxicological properties of the antibiotic or may involve hypersensitivity reactions or anaphylaxis. Safety profiles of newer drugs are often not as well established as for those that have a long history of use. Adverse effects range from fever and nausea to major allergic reactions, including photodermatitis and anaphylaxis. Common side-effects include diarrhea, resulting from disruption of the species composition in the intestinal flora, resulting, for example, in overgrowth of pathogenic bacteria, such as Clostridium difficile. Antibacterials can also affect the vaginal flora, and may lead to overgrowth of yeast species of the genus Candida in the vulvo-vaginal area. Additional side-effects can result from interaction with other drugs, such as elevated risk of tendon damage from administration of a quinolone antibiotic with a systemic corticosteroid. Some scientists have hypothesized that the indiscriminate use of antibiotics alter the host microbiota and this has been associated with chronic disease. Question: What is one possible serious side effect of over-using antibiotics?

Answer: alter the host microbiota

Question: Passage: Southeast Raleigh is bounded by downtown on the west, Garner on the southwest, and rural Wake County to the southeast. The area includes areas along Rock Quarry Road, Poole Road, and New Bern Avenue. Primary neighborhoods include Chastain, Chavis Heights, Raleigh Country Club, Southgate, Kingwood Forest, Rochester Heights, Emerald Village and Biltmore Hills. Time Warner Cable Music Pavilion (formerly Alltel Pavilion and Walnut Creek Amphitheatre) is one of the region's major outdoor concert venues and is located on Rock Quarry Road. Shaw University is located in this part of the city. Question: What neighborhoods does Southeast Raleigh have?

Answer: Chastain, Chavis Heights, Raleigh Country Club,

Question: Passage: Luther wrote "Ach Gott, vom Himmel sieh darein" ("Oh God, look down from heaven"). "Nun komm, der Heiden Heiland" (Now come, Savior of the gentiles), based on Veni redemptor gentium, became the main hymn (Hauptlied) for Advent. He transformed A solus ortus cardine to "Christum wir sollen loben schon" ("We should now praise Christ") and Veni Creator Spiritus to "Komm, Gott Schopfer, Heiliger Geist" ("Come, Holy Spirit, Lord God"). He wrote two hymns on the Ten Commandments, "Dies sind die heilgen Zehn Gebot" and "Mensch, willst du leben seliglich". His "Gelobet seist du, Jesu Christ" ("Praise be to You, Jesus Christ") became the main hymn for Christmas. He wrote for Pentecost "Nun bitten wir den Heiligen Geist", and adopted for Easter "Christ ist erstanden" (Christ is risen), based on Victimae paschali laudes. "Mit Fried und Freud ich fahr dahin", a paraphrase of Nunc dimittis, was intended for Purification, but became also a funeral hymn. He paraphrased the Te Deum as "Herr Gott, dich loben wir" with a simplified form of the melody. It became known as the German Te Deum. Question: What is a Hauptlied?

Answer:
main hymn