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Organisms that show an intermediate level of codon usage optimization include " Drosophila melanogaster " ( fruit fly ) , " Caenorhabditis elegans " ( nematode worm ) , " Strongylocentrotus purpuratus " ( sea urchin ) , and " Arabidopsis thaliana " ( thale cress ) .
 animal: Drosophila melanogaster; animal: worm; animal: sea urchin; plant: Arabidopsis thaliana
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 animal: Drosophila melanogaster; animal: worm; animal: sea urchin; plant: Arabidopsis thaliana