About: 21st century challenge

Premodifier: 21st century
Head noun: challenge

Same concepts

Broader concepts

label	provenance	confidence

Narrower concepts

label	provenance	confidence
climate change	isap:425027064	0.807970
terrorism	isap:353987104	0.614696
health	isap:422406249	0.470322
food	isap:289867166	0.419091