Input: What problems contributed to the high failure rate of Plains farmers in the 1800s ?

What kind of thing would answer this question?

OPTIONS:
- description
- entity
- abbreviation
- human
- numeric
- location
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Output: description

Input: What events happened January 26 , 1978 ?

What kind of thing would answer this question?

OPTIONS:
- description
- entity
- abbreviation
- human
- numeric
- location
***
Output: entity

Input: Why is Microsoft 's Windows 3 software so successful ?

What kind of thing would answer this question?

OPTIONS:
- description
- entity
- abbreviation
- human
- numeric
- location
***
Output:
description