What this means is that a bird should be able to fly freely in an open space.
(this; means; ) (a bird; to fly freely; L:in an open space) (What this means; is; that a bird should be able to fly freely in an open space) Context(What this means is,List([0, 18))):(a bird; should be; able to fly freely in an open space)
What this means is,List([0, 18))
this a bird What this means a bird
means to fly freely is should be
L:in an open space
that a bird should be able to fly freely in an open space
able to fly freely in an open space