YES

TRS:

  first(0(),X) -> nil()
  first(s(X),cons(Y)) -> cons(Y)
  from(X) -> cons(X)

linear polynomial interpretations on N:

  first_A(x1,x2) = x2
  first#_A(x1,x2) = 2
  0_A = 1
  0#_A = 0
  nil_A = 0
  nil#_A = 1
  s_A(x1) = 1
  s#_A(x1) = 0
  cons_A(x1) = 1
  cons#_A(x1) = 0
  from_A(x1) = 1
  from#_A(x1) = 1

precedence:

  first = 0 > nil = s = cons > from