CORD-19:3c1f47a07aaf0e393dee9fbd08596a4b9f4f0a03 / 305598-305853 JSON TXT

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Id	Subject	Object	Predicate	Lexical cue
TextSentencer_T2343	0-255	Sentence	denotes	The reasons for this development may be that natural products are often produced in low quantities and as mixtures of similar compounds, the rediscovery of known compounds and the challenge of natural product derivatisation using classical chemical means.
T20822	0-255	Sentence	denotes	The reasons for this development may be that natural products are often produced in low quantities and as mixtures of similar compounds, the rediscovery of known compounds and the challenge of natural product derivatisation using classical chemical means.

Id	Subject	Object	Predicate	Lexical cue
T79	0-255	Sentence	denotes	The reasons for this development may be that natural products are often produced in low quantities and as mixtures of similar compounds, the rediscovery of known compounds and the challenge of natural product derivatisation using classical chemical means.

Id	Subject	Object	Predicate	Lexical cue
T652	0-255	Epistemic_statement	denotes	The reasons for this development may be that natural products are often produced in low quantities and as mixtures of similar compounds, the rediscovery of known compounds and the challenge of natural product derivatisation using classical chemical means.