What can we see on wind farms?

M: I’ve visited a couple of wind farms, they are an amazing sight.
W: What on earth is a wind farm?
M: You know these windy places where they put big white windmills that capture the wind’s energy. They could be seen quite a lot recently.
W: That’s interesting. I’ve only read a lot about alternative energy sources over the past few weeks.

W: Good morning, how can I help you?
M: I’m looking for a present for my friend. She likes homeopathic products. Could you give me any idea on something that is free of artificial preservatives?
W: Well, there are lots of things I could recommend to you. For example, aloe vera is very popular. There are no E-numbers in this product.