human
Provide possible filling words for X in following sentence: "Hence, it will be essential to look over different frequencies in the X communication and combine them with other technologies to meet those requirements."
gpt
--- Reasoning ---
1. Is the question multiple-choice question?
No
2. Is it implied multiple-choice question?
No
3. If two experts were independently asked the question, will the final answer be exactly the same?
No

--- Answer ---
open