789
Glass fiber reinforced polypropylene was evaluated by Carneiro , Silva and showed 30 % and 40 % improvement for the modulus and strength , respectively , compared to pure PP .
 material: Glass fiber reinforced polypropylene; machanical property: strength; material: pure PP
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 material: Glass fiber reinforced polypropylene; machanical property: strength; material: pure PP