From this they concluded they were again near an ocean, since volcanoes need the presence of a large body of water to provide steam for their eruptions.
(volcanoes; need; the presence of a large body of water to provide steam for their eruptions) (they; concluded; they were again near an ocean, since volcanoes need the presence of a large body of water; T:From this) Context(they concluded,List([10, 24))):(they; were; T:again; near an ocean; since volcanoes need the presence of a large body of water)
they concluded,List([10, 24))
volcanoes they they
need concluded were
the presence of a large body of water to provide steam for their eruptions
they were again near an ocean, since volcanoes need the presence of a large body of water T:From this
T:again near an ocean since volcanoes need the presence of a large body of water