Table:
text: 1984 NHL Entry Draft
Round seven
Round seven
Pick_ Player Position_ Nationality NHL_team College_junior_club_team
144 Darcy Wakaluk Goaltender Canada Buffalo Sabres Kelowna Wings (WHL)
145 Mark Thietke Centre Canada Boston Bruins Saskatoon Blades (WHL)
146 Kelly Murphy Defence Canada New York Islanders Notre Dame Hounds (SJHL)
147 Heikki Riihijarvi Defence Finland Edmonton Oilers Kiekko-Espoo (Finland)

Question: How many collegiate/junior/club teams are there if the NHL team in the seventh round of the 1984 NHL Entry Draft is the Edmonton Oilers?