23634
In contrast to the bullet or parachute shape in a square or cylindrical channel where the capsule extends along the flow direction , in a rectangular channel the capsule extends mainly along the less - confined lateral direction of the channel cross - section ( i . e . the channel width ) , obtaining a pebble - like shape .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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