Connect API ROQL query for Answers by Product

Content

So I'm using an Ajax Controller from the customer portal to search for answers with a custom field value assigned to a specific product but the query keeps failing.

RNCPHP\ROQL::query("SELECT * FROM Answer where CustomFields.c.is_issueofday = 1")->next();

Returns perfectly, but I wanted to know what products are assigned to the answer and filter by them so I ran a describe query and found this:

RNCPHP\ROQL::query("DESCRIBE Answer")->next();

(
    [Name] => Products
    [Type] => SubTable
    [Path] => Answer.Products
)

So I tried this Query:

RNCPHP\ROQL::query("SELECT Answer.Products FROM Answer where CustomFields.c.is_issueofday = 1")->next();