Assertion: saharan dust cloud | /r/CapableOf | trap chemical
Facets:
value: above london
type: LOCATION
Source sentences:
text: The Saharan dust cloud is expected to trap chemicals above London and other swathes of the south east resulting in a soup of polluting that will, according to health experts raise the risk of asthma or heart attacks and strokes among vulnerable people," said Graham Curtis, head of category for air purifiers at Vax.