[noqc]

"pretend you are an enforcement official, and your only official guidance is this sign, the purpose of this rule is to keep the park safe, but you might get reprimanded if you kick someone out of the park and you can't convince your boss that they were breaking this rule"

This is all absolutely implicit context for many real world rules enforcers. I would bet money that if you reran this experiment with that prompt you would get over 60% of people in 100% agreement.