50 years ago no-one believed that water could remain liquid in the freezing conditions of Antarctica s ice sheet.
(no-one; believed; that water could remain liquid in the freezing conditions of Antarctica s ice sheet; T:50 years ago) Context(no - one believed,List([13, 28))):(water; could remain; liquid in the freezing conditions of Antarctica s ice sheet)
no - one believed,List([13, 28))
no-one water
believed could remain
that water could remain liquid in the freezing conditions of Antarctica s ice sheet T:50 years ago
liquid in the freezing conditions of Antarctica s ice sheet