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_29 (v_core VARCHAR, stepping VARCHAR, frequency VARCHAR)
### Question:
What is the v-core for a stepping of G1 and frequency of 1900MHz?
### Answer:
SELECT v_core FROM table_name_29 WHERE stepping = "g1" AND frequency = "1900mhz"