You are given a sentence and your task is to generate another sentence that supports the given input.
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Question: By constricting the blood vessels, cold decreases swelling by inhibiting blood flow to the injured area.

Answer: Blood flow decrease when blood vessels constrict.


Question: In general there are four major classes of compounds that comprise most biological materials.

Answer: There are four classes of biochemical compounds.


Question: 4 pair of walking legs (spiders have 8 legs) Arachnids are spiders, scorpions, ticks, mites, daddy-long-legs Most are carnivorous.

Answer:
Arachnids have 4 pairs of legs.