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A number of small scale clinical trials have unequivocally shown that intermittent subcutaneous apomorphine injections produce antiparkinsonian benefit close if not identical to that seen with levodopa and that apomorphine rescue injections can reliably revert off - periods even in patients with complex on - off motor swings .
 Chemical: apomorphine; Chemical: levodopa; Chemical: apomorphine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: apomorphine; Chemical: levodopa; Chemical: apomorphine