With no explanation, label text_A→text_B with either "entailment", "neutral" or "contradiction".
text_A: The Sawyer and Keeler-Wolf classification system is an evolving system of classification of vegetation types, plant communities, or floristic characterization.
text_B: The Sawyer and Keeler - Wolf classification system is an evolving system of classification of vegetation types, plant communities.
entailment.