Create a new LanceDB table with the description given below. It should follow these rules:
  - Explicitly define the schema of the table with PyArrow
  - Use dataframes to store and manipulate data
  - If there is a column with embeddings, call it "vector"

Here is a basic example: ```python import lancedb import pandas as pd import pyarrow as pa
# Connect to the database db = lancedb.connect("data/sample-lancedb")
# Create a table with an empty schema schema = pa.schema([pa.field("vector", pa.list_(pa.float32(), list_size=2))]) tbl = db.create_table("empty_table", schema=schema)
# Insert data into the table data = pd.DataFrame({"vector": [[1.0, 2.0], [3.0, 4.0]]}) tbl.add(data) ```