Teacher: In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.
Teacher: Now, understand the problem? If you are still confused, see the following example:
Sox - 4 is important for very early B - cell differentiation , while TCF - 1 / LEF - 1 play a crucial role in early thymocyte development 
Solution: TCF - 1
Reason: The gene, TCF - 1 has been tagged as protein since it plays a crucial role in early thymocyte development.

Now, solve this instance: Structure and energetics of gas phase halogen-bonding in mono-, bi-, and tri-dentate anion receptors as studied by BIRD.
Student:
mono-, bi-, and tri-dentate anion receptors