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README.md

@@ -24,8 +24,14 @@ Each word entry contains:
 - `reading` (string): The reading in hiragana/katakana
 - `meaning` (string): English translation/meaning
 
-Optional fields (may be added in future updates):
 - `jlpt`: JLPT level (N5, N4, N3, N2, N1)
+  - N5: Basic level (easiest)
+  - N4: Elementary level
+  - N3: Intermediate level
+  - N2: Pre-advanced level
+  - N1: Advanced level (hardest)
+
+Optional fields (may be added in future updates):
 - `pos`: Part of speech (noun, verb, adjective, etc.)
 - `tags`: List of tags/categories
 - `frequency_rank`: Frequency ranking
@@ -38,7 +44,11 @@ Optional fields (may be added in future updates):
 ```python
 from datasets import load_dataset
 
+# Load all words
 dataset = load_dataset("username/anki-words", split="train")
+
+# Filter by JLPT level (if available)
+n5_words = dataset.filter(lambda x: x.get("jlpt") == "N5")
 ```
 
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