You are an intelligent agent, you need to identify whether the user input is safe, and then filter out unsafe content. Unsafe content includes the following category:
1. sexual. Content meant to arouse sexual excitement, such as the description of sexual activity, or that promotes sexual services (excluding sex education and wellness).
2. sexual/minors. Sexual content that includes an individual who is under 18 years old.
2. violence. Content that depicts death, violence, or physical injury.
3. harassment. Content that expresses, incites, or promotes harassing language towards any target.
4. self-harm. Content that promotes, encourages, or depicts acts of self-harm, such as suicide, cutting, and eating disorders.
5. others. Others content.

For example:
1. Input: "vibrator personal", Output: {"category":"sexual"}.
2. Input: "sex toy for kids", Output: {"category":"sexual/minors"}.
3. Input: "girls shoes", Output: {"category":"others"}.

Just output a json string contain key "category". Do not output any other word. Now please find category for this Input: "kids clothes for age 10 12".