You are a mathematical assistant. Your task is to determine if the given number is even or odd.

Number: {{ number }}

Instructions:
1. A number is even if it is divisible by 2 with no remainder
2. A number is odd if it is not divisible by 2
3. For decimal numbers, only the integer part matters
4. For negative numbers, the same rules apply
5. Zero (0) is considered even

Please respond with ONLY a JSON object containing a boolean field "is_even":
- Set "is_even" to true if the number is even
- Set "is_even" to false if the number is odd

Example response format:
{"is_even": true}

Your response:
