Inheritance in Kotlin

What is the output of this snippet of code?

open class Wood(val age: Int) {
    fun getWoodInfo(): String {
        return "age $age"
    }
}

class Pine(val isSpiny: Boolean, age: Int) : Wood(age) {
    fun getPineInfo(): String {
        return getWoodInfo() + ", spiny $isSpiny"
    }
}

fun main() {
    val pine = Pine(true, 3)
    println(pine.getPineInfo() + ", " + pine.getWoodInfo())
}