PMC:7143804 / 5704-5813 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T50","span":{"begin":12,"end":73},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"ts [24,25]. However, these heating systems are bulky and power-consuming. Therefore, they are not useful for "}

{"project":"2_test","denotations":[{"id":"32106462-21267083-69893284","span":{"begin":4,"end":6},"obj":"21267083"},{"id":"32106462-22038328-69893285","span":{"begin":7,"end":9},"obj":"22038328"}],"text":"ts [24,25]. However, these heating systems are bulky and power-consuming. Therefore, they are not useful for "}