a. keep it moist c. shred leaves before adding them to the pile if ' + 'possible b. turn the material ' + 'frequently d. it is best to compost leaves in one pile and ' + 'grass clippings in a separate pile ';
(a.; keep; it) Context(a. keep,List([0, 7))):(moist c. shred; leaves; T:before adding them to the pile)
a. keep,List([0, 7))
a. moist c. shred
keep leaves
it
T:before adding them to the pile