The given sentence is a question standing in the simple present tense because conocen is the conjugation of the verb conocer that matches the subject pronoun Uds that means you in plural form. The simple present tense is used to talk about habitual actions or routines. So this question translates into:
<em>Do you know the girl that wears the red coat?</em>
The English verb to ask has different translations in Spanish. So preguntar and pedir are two common translations of this verb. Since he wants to know something, we use the verb preguntar. In this way, the conjugation of this verb that matches the third person singular (él - he in English) is pregunta. So He asks what size I wear means Pregunta qué talla llevo.
Non of the following phrases are equivalent to the phrase the correct translation is: Pregunta si conocen a la nina con un abrigo rojo / he asks if they now a girl with a red coat.
