[ Para
    [ Str "Basic" , Space , Str "line" , Space , Str "block:" ]
, LineBlock
    [ [ Str "The" , Space , Str "first" , Space , Str "line." ]
    , [ Str "The" , Space , Str "second" , Space , Str "line." ]
    , [ Str "The" , Space , Str "third" , Space , Str "line." ]
    ]
]
