Assertion: lignin's amount | /r/HasProperty | produced at pyrolysis temperature 800 °c
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Source sentences:
text: The results in Table 5 also show that the phenolic aldehyde group, methoxyl, and side chain hydroxyl of the syringyl and guaiacyl lignin were reduced, and a large amount of substituted methyl, ethenyl, and ethyl phenol were produced at pyrolysis temperature 800 °C.