TASK DEFINITION: In this task, you are given a sentence and a question, you would be asked to create the answer which is contained in the sentence provided.
PROBLEM: Sentence: A grain of pollen can be described as a tiny male gametophyte enclosed in a tough capsule. Question: What can be described as a tiny male gametophyte enclosed in a tough capsule?

SOLUTION: grain of pollen

PROBLEM: Sentence: Distance over time in a given direction determines velocity. Question: What determines velocity?

SOLUTION: distance over time in a given direction

PROBLEM: Sentence: Organisms categorized by ring species species descriptor demonstrate a version of allopatric speciation and have limited regions of overlap with one another, but where they overlap they interbreed successfully. Question: Organisms categorized by what species descriptor demonstrate a version of allopatric speciation and have limited regions of overlap with one another, but where they overlap they interbreed successfully?

SOLUTION:
ring species