<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_step_table_names(steps):
 """ Returns a list of table names injected into the provided steps. Parameters steps: list of str Steps to gather table inputs from. Returns ------- list of str """

    table_names = set()
    for s in steps:
        table_names |= get_step(s)._tables_used()
    return list(table_names)