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Table 2 Analysis of false positives in the test dataset.

From: Exploring Spanish health social media for detecting drug effects

Error cause False Positives Examples
Different context 62 FP1
Co-reference resolution required 46 FP2
Modifier needed for full understanding 28 FP3
Lack of negation resolution 13 FP4
Syntactically Complex phrases 9 FP5
Total 158