The top riser on the FTSEurofirst 300 was United Internet AG , which climbed 7.2 percent after the German Internet service provider said it may float its business offering web-hosting and other online services to corporate customers.
Refer to the input text as context and select the correct relationship between 'United Internet' and 'Internet service provider' from the available options.
Options: director/manager, brand, product/material produced, industry