%YAML 1.1
---
!!seq [
  !!map {
    ? !!str "inner"
    : !!str "entry",
    ? !!str "also"
    : !!str "inner"
  },
  !!map {
    ? !!str "inner"
    : !!str "entry",
    ? !!str "last"
    : !!str "entry"
  }
]