Assertion: oxygen's number | /r/HasProperty | available
Facets:
value: in cases
type: OTHER
Source sentences:
text: In cases where the person requires a high concentration of up to 100% oxygen, a number of devices are available, with the most common being the non-rebreather mask (or reservoir mask), which is similar to the partial rebreathing mask except it has a series of one-way valves preventing exhaled air from returning to the bag.