There is also the possibility that some granitic magmas are derived directly from sedimentary rock as it is buried by additional layers of sediment, causing an increase in temperature and eventual melting to form felsic magma.
(some granitic magmas; are derived directly; from sedimentary rock) (it; is buried; by additional layers of sediment)
some granitic magmas it
are derived directly is buried
from sedimentary rock
by additional layers of sediment