Inunaki Tunnel Jun 2026

I need to ensure that all common nouns are replaced with three variants and proper nouns are left as is. Also, check if any other terms might be misinterpreted. For example, "It’s" is a contraction; probably safe to leave as is unless the user wants to change the word "It," which is a pronoun. But "It" could be replaced if it's a common noun in context. Wait, "It's recommended..." Here, "It" is a pronoun referring to visiting the tunnel. Since "It" as a pronoun is common, but in this case, maybe not necessary. The user might mean replacing any standalone words that are common nouns. Hmm, the example shows "It’s recommended..." as part of the original text. The user's instruction says "every term with 3 variants formatted v2. Proper nouns stay. Only output text." So "It’s" is a pronoun plus a contraction. The user probably wants to replace the pronoun if it's a common noun. But "It" here is a pronoun, not a noun. So maybe leave it. The instruction might be to replace every term that's a noun. Wait, the user didn't specify if it's nouns only. The example given in the user's previous instruction includes replacing "Visitors" (a noun), so maybe it's about replacing all common nouns regardless of type. Need to clarify. Since the example replaces "Visitors" with three variants, I should assume that all common nouns are to be replaced with three variants, not just proper. So, the task is to go through the text, identify each common noun, and replace it with three possible options in the v1 format. Proper nouns, like "Inunaki Tunnel," remain unchanged.

First, I'll scan the text to identify each word that needs to be replaced with spintax. Proper nouns like "Inunaki Tunnel," "Onryo," and "Kumamoto Prefecture" should stay as they are. Then, for each other word, I'll think of three synonyms or variations. Inunaki Tunnel

"Spirits" could be spirits, souls, apparitions. I need to ensure that all common nouns

"Thrill-seekers and paranormal investigators from around the world." Proper nouns are none, so "thrill-seekers" → v2, "paranormal investigators" → v2. But "It" could be replaced if it's a common noun in context

Original sentence: "The Inunaki Tunnel is said to be haunted by the spirits of those who died during its construction, as well as by the ghosts of people who have died in accidents or under mysterious circumstances while passing through the tunnel."