Definition: In this task, you are given a text from a post. Your task is to find all of the proper nouns and label them. The labels are <B-PER>, <I-PER> for persons; <B-ORG>, <I-ORG> for organizations; <B-LOC>, <I-LOC> for locations; and <B-MISC>, <I-MISC> for other nouns. The capital 'B' denotes the first word of a proper noun phrase. The capital 'I' denotes all following words of the same noun phrase. If a word is not a part of a proper noun phrase, do not label it.
Input: In a filing with the Securities and Exchnage Commission , Buffett said he bought 62,900 additional common shares of the Boston-based real estate investment trust at prices ranging from $ 7.65 to $ 8.02 a share . 

In a filing with the Securities <B-ORG> and <I-ORG> Exchnage <I-ORG> Commission <I-ORG> , Buffett <B-PER> said he bought 62,900 additional common shares of the Boston-based <B-MISC> real estate investment trust at prices ranging from $ 7.65 to $ 8.02 a share . 