instruction:
This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.
question:
Israel has nine public universities that are subsidized by the state and 49 private colleges. The Hebrew University of Jerusalem, Israel's second-oldest university after the Technion, houses the National Library of Israel, the world's largest repository of Judaica and Hebraica. The Technion, the Hebrew University, and the Weizmann Institute consistently ranked among world's 100 top universities by the prestigious ARWU academic ranking. The Hebrew University of Jerusalem and Tel Aviv University are ranked among the world's top 100 universities by Times Higher Education magazine. Other major universities in the country include Bar-Ilan University, the University of Haifa, The Open University, and Ben-Gurion University of the Negev. Ariel University, in the West Bank, is the newest university institution, upgraded from college status, and the first in over thirty years. Israel's seven research universities (excluding the Open University) are consistently ranked among top 500 in the world.
answer:
How many public universities does Israel have?


question:
The emergence of Susa as a city, as determined by radiocarbon dating, dates back to early 4,395 BC. There are dozens of prehistoric sites across the Iranian plateau, pointing to the existence of ancient cultures and urban settlements in the 4th millennium BC. During the Bronze Age, Iran was home to several civilizations including Elam, Jiroft, and Zayande River. Elam, the most prominent of these civilizations, developed in the southwest of Iran, alongside those in Mesopotamia. The emergence of writing in Elam was paralleled to Sumer, and the Elamite cuneiform was developed since the 3rd millennium BC.
answer:
What ancient city dates back as early as 4395 BC in Iran?


question:
Dell was the first company to publicly state a timeline for the elimination of toxic polyvinyl chloride (PVC) and brominated flame retardants (BFRs), which it planned to phase out by the end of 2009. It revised this commitment and now aims to remove these toxics by the end of 2011 but only in its computing products. In March 2010, Greenpeace activists protested at Dell offices in Bangalore, Amsterdam and Copenhagen calling for Dell’s founder and CEO Michael Dell to ‘drop the toxics’ and claiming that Dell’s aspiration to be ‘the greenest technology company on the planet’ was ‘hypocritical’. Dell has launched its first products completely free of PVC and BFRs with the G-Series monitors (G2210 and G2410) in 2009.
answer:

What toxic chemical did Dell set to eliminate from its products?