Assertion: phosgene | /r/HasProperty | difficult to detect
Facets:
Source sentences:
text: Colourless and having an odour likened to "mouldy hay," phosgene was difficult to detect, making it a more effective weapon.
text: Colourless and having an odour likened to "mouldy hay," phosgene was difficult to detect, making it a more effective weapon.
text: Colourless and having an odour likened to "mouldy hay," phosgene was difficult to detect, making it a more effective weapon.