Q: An allene is a compound in which one carbon atom has double bonds with each of its two adjacent carbon centres. Allenes are classified as polyenes with cumulated dienes. The parent compound of allene is propadiene. Compounds with an allene-type structure but with more than three carbon atoms are called cumulenes. Allenes are much more reactive than most other alkenes. For example, their reactivity with gaseous chlorine is more like the reactivity of alkynes than that of alkenes.
Can we conclude that can two double bonds be next to each other?
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A: yes
3-1-1 creates a central hub for constituents to be able to access a variety of city services. The number 3-1-1 is intended in part to divert routine inquiries and non-urgent community concerns from the 9-1-1 number which is reserved for emergency service. A promotional website for 3-1-1 in Akron described the distinction as follows: ''Burning building? Call 9-1-1. Burning Question? Call 3-1-1.''
can i call 311 to ask a question?
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Answer: yes
The strongest jet streams are the polar jets, at 9--12 km (30,000--39,000 ft) above sea level, and the higher altitude and somewhat weaker subtropical jets at 10--16 km (33,000--52,000 ft). The Northern Hemisphere and the Southern Hemisphere each have a polar jet and a subtropical jet. The northern hemisphere polar jet flows over the middle to northern latitudes of North America, Europe, and Asia and their intervening oceans, while the southern hemisphere polar jet mostly circles Antarctica all year round.

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is there a jet stream in the southern hemisphere?

A: yes
Problem: Text: Sodium channels are integral membrane proteins that form ion channels, conducting sodium ions (Na) through a cell's plasma membrane. They are classified according to the trigger that opens the channel for such ions, i.e. either a voltage-change (''Voltage-gated'', ''voltage-sensitive'', or ''voltage-dependent'' sodium channel also called ''VGSCs'' or ''Nav channel'') or a binding of a substance (a ligand) to the channel (ligand-gated sodium channels).

Question: are voltage-gated sodium channels always open?

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A: no
IN: Is it true that is coca cola and sprite the same company?

Sprite is a colorless, caffeine-free, lemon- and lime-flavored soft drink created by The Coca-Cola Company. It was first developed in West Germany in 1959 as Fanta Klare Zitrone (''Clear Lemon Fanta'') and was introduced in the United States under the current brand name Sprite in 1961 as a competitor to 7 Up. Bottles of Sprite are usually transparent green in color, with a green and yellow label, whereas cans are colored silver, green, and blue, and aluminum bottles have a solid lime green color.

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OUT: yes
What's the best answer to this question: is tedy bruschi in the hall of fame?

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Answer:
yes