A filament of silk is spun by silkworm to protect itself from enemies during the cycle of growth from caterpillar to chrysalis to moth.
(A filament of silk; is spun; by silkworm; to protect itself from enemies during the cycle of growth from caterpillar to chrysalis to moth)
A filament of silk
is spun
by silkworm to protect itself from enemies during the cycle of growth from caterpillar to chrysalis to moth