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Of the film 's $ 15million budget , $ 1.5 million was spent on Rob Bottin 's creature effects , a mixture of chemicals , food products , rubber , and mechanical parts turned by his large team into an alien capable of taking on any form .
 Rob Bottin
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Rob Bottin