Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_51 (lijsttrekker VARCHAR, year VARCHAR, chair VARCHAR)
### Question:
What is Lijsttrekker, when Year is after 1990, and when Chair is "Ingrid Van Engelshoven"?
### Answer:
SELECT lijsttrekker FROM table_name_51 WHERE year > 1990 AND chair = "ingrid van engelshoven"