Add 28_art_year: Art year classification

Add 26_headline_isfrontpage: Front page headline classification

Add 25_headline_year: Headline year classification

Add 24_headline_isiran: Headlines mentioning Iran

Add 23_headline_ischina: Headlines mentioning China

Add 22_headline_isobama: Headlines mentioning Obama

Add 21_headline_istrump: Headlines mentioning Trump

Add 20_world_pageviews: World entity pageviews classification

Add 19_world_longitude: World longitude classification

Add 18_world_latitude: World latitude classification

Add 16_us_density: US density classification

Add 15_us_population: US population classification

Add 12_us_long: US longitude classification

Add 11_us_lat: US latitude classification

Add 9_nyc_long: NYC longitude classification

Add 8_nyc_lat: NYC latitude classification

Add 7_hist_fig_ispolitician: Politician occupation of historical figures

Add 6_hist_fig_isamerican: American nationality of historical figures

Add 5_hist_fig_ismale: Gender classification of historical figures

Add 4_hist_fig_age: Age of historical figures

Add 3_hist_fig_deathyear: Death year of historical figures

Add 2_hist_fig_birthyear: Birth year of historical figures

initial commit