You have to answer the sub$-$questions based on the following case study.

"You are asked to implement a project assessment system. In the system, there are calls for research projects that are announced at specific times of year about certain subjects. Researchers can apply to any of the calls with an unlimited number of projects. However, if a certain researcher has applied to at least one project, s$/$he cannot be assigned as an evaluator in the project call. In addition, none of the employees from an organization or a company can be selected as an evaluator for a call if at least one employee from the same working place $($organization or company$)$ has submitted a project to the same call. In order to be an evaluator, first, individuals should apply to the system and enter up to $30$ keywords in order to describe the research interests. When projects are submitted to the call, up to $5$ keywords that describe the project contents should be provided. The evaluators are selected based on these keywords. A company, organization, or an individual can work as a coordinator for a maximum of three projects and as a partner for a maximum of five projects. Each submitted project should have only one coordinator and an unlimited number of partners. For each project, $5$ different evaluators are assigned."

Q$1\mathrm{.}2$

$5$ Points

Give two different constraints $($examples$)$ related to the above case study which cannot be specified by E$-$R diagrams