Premodifier: reading
Head noun: difficulty

Same concepts
http://dbpedia.org/resource/Readability

Broader concepts

labelprovenanceconfidence
issueisap:4729457700.640239
problemisap:2195561420.558542

Narrower concepts

labelprovenanceconfidence
dyslexiaisap:1799917500.665209
student with dyslexiaisap:2457132700.502751
child with dyslexiaisap:2614872690.429626
childisap:2614872740.414099
boyisap:2374473820.282069