2733
During BH the ventilator was disconnected and a bias flow of 50 % O2 at 4 - 5 l / min was delivered through the side ports of a small catheter whose tip was positioned 1 cm cephalad of the carina .
 None
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:  
Answer:
 None