703
We also report here the complete structural organization of the goat alpha s1 - casein transcription unit , deduced from polymerase chain reaction experiments .
 GENE: goat alpha s1 - casein transcription unit
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: goat alpha s1 - casein transcription unit 
Answer:
 GENE: goat alpha s1 - casein transcription unit