Here's a short story:

The modern English word green comes from the Middle English and Anglo-Saxon word grene, from the same Germanic root as the words "grass" and "grow". It is the color of living grass and leaves and as a result is the color most associated with springtime, growth and nature. By far the largest contributor to green in nature is chlorophyll, the chemical by which plants photosynthesize and convert sunlight into chemical energy. Many creatures have adapted to their green environments by taking on a green hue themselves as camouflage. Several minerals have a green color, including the emerald, which is colored green by its chromium content. 

In surveys made in Europe and the United States, green is the color most commonly associated with nature, life, health, youth, spring, hope and envy. In Europe and the U.S. green is sometimes associated with death (green has several seemingly contrary associations), sickness, or the devil, but in China its associations are very positive, as the symbol of fertility and happiness. In the Middle Ages and Renaissance, when the color of clothing showed the owner's social status, green was worn by merchants, bankers and the gentry, while red was the color of the nobility. The Mona Lisa by Leonardo da Vinci wears green, showing she is not from a noble family; the benches in the British House of Commons are green, while those in the House of Lords are red. Green is also the traditional color of safety and permission; a green light means go ahead, a green card permits permanent residence in the United States. It is the most important color in Islam. It was the color of the banner of Muhammad, and is found in the flags of nearly all Islamic countries, and represents the lush vegetation of Paradise. It is also often associated with the culture of Gaelic Ireland, and is a color of the flag of Ireland. Because of its association with nature, it is the color of the environmental movement. Political groups advocating environmental protection and social justice describe themselves as part of the Green movement, some naming themselves Green parties. This has led to similar campaigns in advertising, as companies have sold green, or environmentally friendly, products. (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: What makes the emerald green?
Guess: chromium

Question: Where does most green come from in nature?
Guess: chlorophyll

Question: Is that a chemical?
Guess: yes

Question: What uses that?
Guess: plants

Question: to make what?
Guess: chemical energy.

Question: out of what?
Guess: sunlight

Question: How?
Guess: photosynthesize it

Question: Where does the word green originate?
Guess: the word grene

Question: Where is that from?
Guess: Middle English and Anglo-Saxon

Question: What kind of root does it come from?
Guess: Germanic

Question: What other words use that root?
Guess: "grass" and "grow"

Question: What is associated with this color?
Guess: springtime, growth and nature

Question: Does anyone ever think of green with death?
Guess: yes

Question: Where?
Guess: In Europe and the U.S

Now answer the following question in the same format.

Question: How often?

sometimes