Yes, there are a few other methods to determine the ripeness of a watermelon:

1. Look at the sugar spots. Sugar spots are small, white, raised spots on the rind of a watermelon. They are a sign that the watermelon is ripe and sweet.

2. Check the stem. If the stem is still attached to the watermelon, it should be dry and shriveled. If the stem is still green, the watermelon was picked too early and is not ripe.

3. Tap the watermelon. A ripe watermelon will have a dull sound when you tap it, while an unripe watermelon will have a more metallic sound.

4. Observe the color. A ripe watermelon will have a uniform, dull color all over the rind. If the watermelon has a shiny, bright green color, it is not ripe.

5. Check the shape. A ripe watermelon will have a symmetrical shape, while an unripe watermelon will have an irregular shape.

These are some of the additional methods you can use to determine the ripeness of a watermelon.
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence