Question:
Which team did Stuart Waterton play for in Apr, 1991?

Context:
 Stuart Waterton plays for Minor counties of English and Welsh cricket from Jan, 1990 to Jan, 1992. 
 Stuart Waterton plays for Lancashire County Cricket Club from Jan, 1990 to Jan, 1990. 
 Stuart Waterton plays for Kent County Cricket Club from Jan, 1980 to Jan, 1985. 
 Stuart Waterton plays for Northamptonshire County Cricket Club from Jan, 1986 to Jan, 1987. 
 Stuart Waterton plays for Oxfordshire County Cricket Club from Jan, 1989 to Jan, 1997.

Answer:
Oxfordshire County Cricket Club