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Given the following text description, write Python code to implement the functionality described below step by step
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Description:
 monoracial has no data from NYT. 
1865, 1905, 1915 (monocultural) NYT
Step1:  biethnic has no frequency in NYT
1865 (NYT biracial)
Step2:  polyracial and polyethnic have no frequencies in the NYT
No data before 1950
Step3:  mixed ethnicity barely has a frequency in the present and other ethnicity has no frequency in the NYT
mixed results
Step4:  polyculturalism has no frequency in NYT
1865, 1905, 1915, 1925 (cultural pluralism) NYT
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Python Code:
plot_both(['bicultural', 'biracial', 'biethnic', 'interracial'])
plt.xlim(1910, 2015)
Explanation: monoracial has no data from NYT. 
1865, 1905, 1915 (monocultural) NYT
End of explanation
plot_both(['multicultural', 'multiracial', 'multiethnic', 'polycultural', 'polyracial', 'polyethnic'])
plt.xlim(1950, 2015)
Explanation: biethnic has no frequency in NYT
1865 (NYT biracial)
End of explanation
plot_both(['mixed race', 'mixed ethnicity', 'other race', 'other ethnicity'])
Explanation: polyracial and polyethnic have no frequencies in the NYT
No data before 1950
End of explanation
plot_both(['multiculturalism', 'polyculturalism', 'cultural pluralism'])
plt.xlim(1940, 2015)
Explanation: mixed ethnicity barely has a frequency in the present and other ethnicity has no frequency in the NYT
mixed results
End of explanation
plot_both(['monocultural', 'interracial', 'bicultural', 'multicultural', 'multiracial', 'multiethnic', 'mixed race'])
plt.xlim(1920, 2015)
Explanation: polyculturalism has no frequency in NYT
1865, 1905, 1915, 1925 (cultural pluralism) NYT
End of explanation
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