Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.

### Instruction:

Convert text to sql: Find the number of scientists involved for the projects that require more than 300 hours. | scientists : ssn , name | projects : code , name , hours | assignedto : scientist , project | assignedto.project = projects.code | assignedto.scientist = scientists.ssn | 

### Response:

select count ( _ ) , _ from _ where _ group by _ | select count ( * ) , projects.name from projects join assignedto on projects.code = assignedto.project where projects.hours > 300 group by projects.name