Assume that $X$ is a compact Hausdorff space and $A\subset X$ is a retract of $X$. >Is there a topological groupoid structure on the topological pair $(X,A)$ where, in the corresponding small category, $X$ and $A$ plays the role of morphisms and objects, respectively. After the comment to this question we add: For example what about $X=S^{n}$ and $A=$ Its north hemisphere?