Construct a SQL query which will output the names of all the people born before 1990.
Assuming that you have a column named `dob` (date of birth) stored in a `people` table, here's an SQL query that outputs the names of all the people born before 1990:

```sql
SELECT name
FROM people
WHERE YEAR(dob) < 1990;
```
Below is an instruction that describes a task, write a response that appropriately completes the request.

### Instruction:
Construct a SQL query which will output the names of all the people born before 1990.

### Response:
Assuming that you have a column named `dob` (date of birth) stored in a `people` table, here's an SQL query that outputs the names of all the people born before 1990:

```sql
SELECT name
FROM people
WHERE YEAR(dob) < 1990;
```