how many trains on this graph do not mention alco or alco-brooks as its builder?
10
Number Arrangement Year, Builder Number Arrangement Year, Builder Number Model Year, Builder
Governor Markham 2-4-2T 1891, Baldwin Number 7 0-6-0 1914, Alco-Brooks Number 20 S2 Alco
Number 2 0-4-2T 1901, Baldwin Number 8 0-6-0 1916 Number 21 S2 Alco
Number 3 0-4-2T 1904, Baldwin Number 9 0-6-0 1920, Alco-Brooks Number 22 S2 1944, Alco
Number 4 Number 10 0-6-0 1923, Baldwin Number 23 S2 1944, Alco
Number 5 Number 11 0-6-0 1927 Number 24 S2 1945, Alco
Number 6 0-6-0 1913, Baldwin Number 12 Number 25 S2 Alco
csv/202-csv/146.tsv