bh:अलेक्जेंडर	B-PER
bh:फॉन	I-PER
bh:हम्बोल्ट	I-PER
bh:(	O
bh:1769–1859	O
bh:)	O
bh:–	O
bh:considered	O
bh:the	O
bh:father	O
bh:of	O
bh:modern	O
bh:geography	O
bh:.	O

