7772
Single and repeated injections both demonstrated a statistically significant reduction in dyspareunia by VAS scores from 54 to 30 in the single injection group and from 51 to 23 in the multiple injection group ( p = . 001 ) , non - menstrual pelvic pain VAS from 37 to 25 ( p = . 04 ) , as well as vaginal pressures ; 40 versus 34 cm H ( 2 ) O ( p = . 02 ) .
 Chemical: H ( 2 ) O
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: H ( 2 ) O