Teacher:Given a sentence and two mentions from the text (arguments), indicate a phrase (a verb or noun phrase) that describes the relationship between the provided arguments.
Teacher: Now, understand the problem? Solve this instance: Sentence: 'New TechCrunch co-editor Erick Schonfeld posted a short article yesterday .', Argument/Subject 1: 'erick schonfeld', Argument/Subject 2: 'techcrunch'
Student:
be co-editor of