Take the following as truth: Because of the erratic nature of the eruptions, the approach to the central crater can vary from one eruption to the next (serious eruptions in 1998 lasted over a period of 8 months).
Then the following statement: "There is of course a certain degree if risk involved in a visit to the crater, but eruptions are usually preceded by obvious warning signs." is true, false, or inconclusive?
Answer: Inconclusive