大家好，我有个dataset(如下），第一列是国家（全世界所有国家），第二列是年份，第三列是教育水平，然后我现在想单独看亚洲国家的数据，所以我需要对OECD国家做标记或者generate一个新的dummy变量Asia（Asia==1是亚洲国家）

我的问题是如何最快捷的达成？我有个OECD国家的list是这样的：[size=12.144000053405762px]Australia, Austria, Belgium, Canada, Chile, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Israel, Italy, Japan, Korea, Luxembourg, Mexico, the Netherlands, New Zealand, Norway, Poland, Portugal, Slovak Republic, Slovenia, Spain, Sweden, Switzerland, Turkey, the United Kingdom, and the United States但是这个list就是个文本形式。

input str59 country float(cohort edu)
"Albania"    1959  9.538564
"Albania"    1960    9.7205
"Albania"    1961  10.38757
"Albania"    1962 10.035843
"Albania"    1963  9.825669
"Armenia"    1951 12.060455
"Armenia"    1952  11.64114
"Armenia"    1953  11.73964
"Armenia"    1954 11.897792
"Armenia"    1955  11.40264
"Armenia"    1956  8.362055
"Armenia"    1957  8.872759
"Armenia"    1958  9.707067
"Armenia"    1959  9.245696
"Armenia"    1960  8.758353
"Armenia"    1961 11.930861
"Armenia"    1962 11.620766
"Armenia"    1963  11.92556
"Armenia"    1964 12.075476
"Armenia"    1965   11.7848
"Azerbaijan" 1956 11.204862
"Azerbaijan" 1957 11.337256
"Azerbaijan" 1958  10.71392
"Azerbaijan" 1959  10.90022
"Azerbaijan" 1960 10.604225
"Azerbaijan" 1961  10.55452
"Bangladesh" 1944  .8060991
"Bangladesh" 1945  .8544385
"Bangladesh" 1946  .9948863
"Bangladesh" 1947  .9759765
"Bangladesh" 1948 1.3651603
"Bangladesh" 1949  1.232707
"Bangladesh" 1950 1.6730702
"Bangladesh" 1951 1.5602465
"Bangladesh" 1952 1.7963178
"Bangladesh" 1953  2.175508
"Bangladesh" 1954  1.731983
"Bangladesh" 1955 1.4768728
"Bangladesh" 1956 2.0116663
"Bangladesh" 1957  1.795249
"Bangladesh" 1958 1.6632985
"Bangladesh" 1959 2.0711775
"Bangladesh" 1960 2.1534436
"Bangladesh" 1961  2.701264
"Bangladesh" 1962 2.3933475
"Bangladesh" 1963  2.298063
"Bangladesh" 1964  2.458951
"Bangladesh" 1965 2.8898826
"Bangladesh" 1966    2.6969
"Bangladesh" 1967 2.7400115
"Bangladesh" 1968  2.880957
"Benin"      1936  .3026316
"Benin"      1946  .3448519
"Benin"      1947  .7168261
"Benin"      1948  .4723682
"Benin"      1949  .8965986