File type = "ooTextFile"
Object class = "TextGrid"

xmin = 0
xmax = 2.3
tiers? <exists>
size = 3
item []:
    item [1]:
       class = "IntervalTier"
       name = "Mary"
       xmin = 0
       xmax = 2.3
       intervals: size = 1
       intervals [1]:
          xmin = 0
          xmax = 2.3
          text = ""
    item [2]:
       class = "IntervalTier"
       name = "John"
       xmin = 0
       xmax = 2.3
       intervals: size = 1
       intervals [1]:
          xmin = 0
          xmax = 2.3
          text = ""
    item [3]:
       class = "TextTier"
       name = "bell"
       xmin = 0
       xmax = 2.3
       points: size = 0