This poll is not going to be accurate because you have worded it so. Everyone knows there are tunnels there because Israel dug them in particular there before leaving occupation in 2006. The real questions should be if they are connected, serving as a logistics hub, or used for storage of weapons. Even then, that’s a completely different question on if it was justified to take the hospital in the way they did as opposed to just bombing it and of the certainty of the intelligence played into the decision making there.
Israel occupied the Gaza strip until 2005. There is certain infrastructure that they built and tunnels under that hospital was one of them. It was not for military purposes but they know it is there. It’s important to understand the context behind the news as well as the events themselves.