Assertion: nitrogen dioxide's gas | /r/HasProperty | inert or semi-inert gases
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Source sentences:
text: Shielding gases are inert or semi-inert gases that are commonly used in several welding processes, most notably gas metal arc welding and gas tungsten arc welding (GMAW and GTAW, more popularly known as MIG (Metal Inert Gas) and TIG (Tungsten Inert Gas), respectively).