13961
Poly ( 4 - hydroxybutyrate ) ( P4HB ) is a highly elastic polymer , whereas poly ( 3 - hydroxypropionate ) ( P3HP ) is a polymer with enormous tensile strength .
 Chemical: Poly ( 4 - hydroxybutyrate ); Chemical: P4HB; Chemical: poly ( 3 - hydroxypropionate ); Chemical: P3HP
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Poly ( 4 - hydroxybutyrate ); Chemical: P4HB; Chemical: poly ( 3 - hydroxypropionate ); Chemical: P3HP