Sedimentary rocks may eventually be heated enough to melt, forming a new generation of igneous rocks (although technically they'd be metamorphic by the time they melted).
(Sedimentary rocks; may be; heated enough to melt; T:eventually) (Sedimentary rocks; to melt; ) (Sedimentary rocks; forming; a new generation of igneous rocks) (they; melted; T:the time)
Sedimentary rocks Sedimentary rocks Sedimentary rocks they
may be to melt forming melted
heated enough to melt T:eventually
a new generation of igneous rocks
T:the time