Mixed with the stone and gravel debris were massive blocks of ice that melted to form kettle ponds.
(Mixed with the stone and gravel debris; were; massive blocks of ice that melted to form kettle ponds) (massive blocks of ice; melted; to form kettle ponds) Context(massive blocks of ice melted,List([44, 77))):(massive blocks of ice; melted to form; kettle ponds)
massive blocks of ice melted,List([44, 77))
Mixed with the stone and gravel debris massive blocks of ice massive blocks of ice
were melted melted to form
massive blocks of ice that melted to form kettle ponds
to form kettle ponds
kettle ponds